21220102020012 has 48 divisors (see below), whose sum is σ = 56597934032640. Its totient is φ = 6061708222272.

The previous prime is 21220102020001. The next prime is 21220102020037. The reversal of 21220102020012 is 21002020102212.

It is a junction number, because it is equal to n+sod(n) for n = 21220102019973 and 21220102020000.

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, 24108187 + ... + 24972882.

It is an arithmetic number, because the mean of its divisors is an integer number (1179123625680).

Almost surely, 2^{21220102020012} is an apocalyptic number.

It is an amenable number.

21220102020012 is an abundant number, since it is smaller than the sum of its proper divisors (35377832012628).

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

21220102020012 is a wasteful number, since it uses less digits than its factorization.

21220102020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49086230 (or 49086228 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21220102020012 its reverse (21002020102212), we get a palindrome (42222122122224).

The spelling of 21220102020012 in words is "twenty-one trillion, two hundred twenty billion, one hundred two million, twenty thousand, twelve".