101211221111012 has 12 divisors (see below), whose sum is σ = 177119885956860. Its totient is φ = 50605539409056.

The previous prime is 101211221110949. The next prime is 101211221111023. The reversal of 101211221111012 is 210111122112101.

It can be written as a sum of positive squares in 2 ways, for example, as 68036201540836 + 33175019570176 = 8248406^2 + 5759776^2 .

It is a super-2 number, since 2×101211221111012² (a number of 29 digits) contains 22 as substring.

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, 14519123 + ... + 20327994.

It is an arithmetic number, because the mean of its divisors is an integer number (14759990496405).

Almost surely, 2^{101211221111012} is an apocalyptic number.

It is an amenable number.

101211221111012 is a deficient number, since it is larger than the sum of its proper divisors (75908664845848).

101211221111012 is a wasteful number, since it uses less digits than its factorization.

101211221111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35573230 (or 35573228 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 101211221111012 its reverse (210111122112101), we get a palindrome (311322343223113).

The spelling of 101211221111012 in words is "one hundred one trillion, two hundred eleven billion, two hundred twenty-one million, one hundred eleven thousand, twelve".