101221122021112 has 64 divisors (see below), whose sum is σ = 204480191692800. Its totient is φ = 46836927371520.

The previous prime is 101221122021079. The next prime is 101221122021113. The reversal of 101221122021112 is 211120221122101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 101221122021112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221122021113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20954089 + ... + 25328167.

It is an arithmetic number, because the mean of its divisors is an integer number (3195002995200).

Almost surely, 2^{101221122021112} is an apocalyptic number.

It is an amenable number.

101221122021112 is an abundant number, since it is smaller than the sum of its proper divisors (103259069671688).

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

101221122021112 is a wasteful number, since it uses less digits than its factorization.

101221122021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4378196 (or 4378192 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 101221122021112 its reverse (211120221122101), we get a palindrome (312341343143213).

The spelling of 101221122021112 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred twenty-two million, twenty-one thousand, one hundred twelve".