1201231022 has 4 divisors (see below), whose sum is σ = 1801846536. Its totient is φ = 600615510.

The previous prime is 1201231013. The next prime is 1201231027. The reversal of 1201231022 is 2201321021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1201230988 and 1201231006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201231027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300307754 + ... + 300307757.

It is an arithmetic number, because the mean of its divisors is an integer number (450461634).

Almost surely, 2^1201231022 is an apocalyptic number.

1201231022 is a deficient number, since it is larger than the sum of its proper divisors (600615514).

1201231022 is an equidigital number, since it uses as much as digits as its factorization.

1201231022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600615513.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1201231022 is about 34658.7798688875. The cubic root of 1201231022 is about 1063.0218216846.

Adding to 1201231022 its reverse (2201321021), we get a palindrome (3402552043).

It can be divided in two parts, 12012 and 31022, that added together give a palindrome (43034).

The spelling of 1201231022 in words is "one billion, two hundred one million, two hundred thirty-one thousand, twenty-two".