20101222021012 has 24 divisors (see below), whose sum is σ = 38387977018272. Its totient is φ = 9133843672800.

The previous prime is 20101222021009. The next prime is 20101222021061. The reversal of 20101222021012 is 21012022210102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76753483 + ... + 77014930.

It is an arithmetic number, because the mean of its divisors is an integer number (1599499042428).

Almost surely, 2^{20101222021012} is an apocalyptic number.

20101222021012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20101222021012 is a deficient number, since it is larger than the sum of its proper divisors (18286754997260).

20101222021012 is a wasteful number, since it uses less digits than its factorization.

20101222021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153771399 (or 153771397 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20101222021012 its reverse (21012022210102), we get a palindrome (41113244231114).

The spelling of 20101222021012 in words is "twenty trillion, one hundred one billion, two hundred twenty-two million, twenty-one thousand, twelve".