101201121231 has 32 divisors (see below), whose sum is σ = 154792535040. Its totient is φ = 57611506176.

The previous prime is 101201121191. The next prime is 101201121239. The reversal of 101201121231 is 132121102101.

It is not a de Polignac number, because 101201121231 - 2⁷ = 101201121103 is a prime.

It is a super-2 number, since 2×101201121231² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101201121231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101201121239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10108030 + ... + 10118036.

It is an arithmetic number, because the mean of its divisors is an integer number (4837266720).

Almost surely, 2^101201121231 is an apocalyptic number.

101201121231 is a deficient number, since it is larger than the sum of its proper divisors (53591413809).

101201121231 is a wasteful number, since it uses less digits than its factorization.

101201121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11783.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 101201121231 its reverse (132121102101), we get a palindrome (233322223332).

The spelling of 101201121231 in words is "one hundred one billion, two hundred one million, one hundred twenty-one thousand, two hundred thirty-one".