101211220118 has 32 divisors (see below), whose sum is σ = 160713469440. Its totient is φ = 47671001280.

The previous prime is 101211220087. The next prime is 101211220133. The reversal of 101211220118 is 811022112101.

It is a happy number.

It is a super-2 number, since 2×101211220118² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 101211220118.

It is a congruent number.

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, 5190455 + ... + 5209917.

It is an arithmetic number, because the mean of its divisors is an integer number (5022295920).

Almost surely, 2^101211220118 is an apocalyptic number.

101211220118 is a deficient number, since it is larger than the sum of its proper divisors (59502249322).

101211220118 is a wasteful number, since it uses less digits than its factorization.

101211220118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20252.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 101211220118 its reverse (811022112101), we get a palindrome (912233332219).

The spelling of 101211220118 in words is "one hundred one billion, two hundred eleven million, two hundred twenty thousand, one hundred eighteen".