1221234132 has 12 divisors (see below), whose sum is σ = 2849546336. Its totient is φ = 407078040.

The previous prime is 1221234107. The next prime is 1221234143. The reversal of 1221234132 is 2314321221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1221234099 and 1221234108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50884744 + ... + 50884767.

Almost surely, 2^1221234132 is an apocalyptic number.

1221234132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1221234132 is an abundant number, since it is smaller than the sum of its proper divisors (1628312204).

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

1221234132 is a wasteful number, since it uses less digits than its factorization.

1221234132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101769518 (or 101769516 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 1221234132 is about 34946.1604757948. The cubic root of 1221234132 is about 1068.8899111112.

Adding to 1221234132 its reverse (2314321221), we get a palindrome (3535555353).

The spelling of 1221234132 in words is "one billion, two hundred twenty-one million, two hundred thirty-four thousand, one hundred thirty-two".