20021220011012 has 48 divisors (see below), whose sum is σ = 38852196008640. Its totient is φ = 8950611369600.

The previous prime is 20021220010973. The next prime is 20021220011021. The reversal of 20021220011012 is 21011002212002.

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, 32192543 + ... + 32808569.

It is an arithmetic number, because the mean of its divisors is an integer number (809420750180).

Almost surely, 2^{20021220011012} is an apocalyptic number.

20021220011012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20021220011012 is a deficient number, since it is larger than the sum of its proper divisors (18830975997628).

20021220011012 is a wasteful number, since it uses less digits than its factorization.

20021220011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628212 (or 628210 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20021220011012 its reverse (21011002212002), we get a palindrome (41032222223014).

The spelling of 20021220011012 in words is "twenty trillion, twenty-one billion, two hundred twenty million, eleven thousand, twelve".