101221120222012 has 72 divisors (see below), whose sum is σ = 206187489812304. Its totient is φ = 43353073628928.

The previous prime is 101221120221997. The next prime is 101221120222037. The reversal of 101221120222012 is 210222021122101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4537628163 + ... + 4537650469.

It is an arithmetic number, because the mean of its divisors is an integer number (2863715136282).

Almost surely, 2^{101221120222012} is an apocalyptic number.

It is an amenable number.

101221120222012 is an abundant number, since it is smaller than the sum of its proper divisors (104966369590292).

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

101221120222012 is a wasteful number, since it uses less digits than its factorization.

101221120222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35915 (or 35906 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 101221120222012 its reverse (210222021122101), we get a palindrome (311443141344113).

The spelling of 101221120222012 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred twenty million, two hundred twenty-two thousand, twelve".