1201221432 has 48 divisors (see below), whose sum is σ = 3284913840. Its totient is φ = 396517248.

The previous prime is 1201221431. The next prime is 1201221433. The reversal of 1201221432 is 2341221021.

It is a happy number.

1201221432 is a `hidden beast` number, since 12 + 0 + 1 + 221 + 432 = 666.

1201221432 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1201221431) and next prime (1201221433).

It is a super-2 number, since 2×1201221432² = 2885865857392261248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201221431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73573 + ... + 88404.

It is an arithmetic number, because the mean of its divisors is an integer number (68435705).

Almost surely, 2^1201221432 is an apocalyptic number.

1201221432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201221432 is an abundant number, since it is smaller than the sum of its proper divisors (2083692408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201221432 is a wasteful number, since it uses less digits than its factorization.

1201221432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162092 (or 162085 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1201221432 is about 34658.6415198288. The cubic root of 1201221432 is about 1063.0189928071.

Adding to 1201221432 its reverse (2341221021), we get a palindrome (3542442453).

The spelling of 1201221432 in words is "one billion, two hundred one million, two hundred twenty-one thousand, four hundred thirty-two".