1201101212136 has 64 divisors (see below), whose sum is σ = 3580922880000. Its totient is φ = 328251261888.

The previous prime is 1201101212089. The next prime is 1201101212167. The reversal of 1201101212136 is 6312121011021.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155418136 + ... + 155425863.

It is an arithmetic number, because the mean of its divisors is an integer number (55951920000).

Almost surely, 2^{1201101212136} is an apocalyptic number.

It is an amenable number.

1201101212136 is an abundant number, since it is smaller than the sum of its proper divisors (2379821667864).

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

1201101212136 is a wasteful number, since it uses less digits than its factorization.

1201101212136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310844038 (or 310844034 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 1201101212136 its reverse (6312121011021), we get a palindrome (7513222223157).

The spelling of 1201101212136 in words is "one trillion, two hundred one billion, one hundred one million, two hundred twelve thousand, one hundred thirty-six".