20010010021002 has 24 divisors (see below), whose sum is σ = 45636864960960. Its totient is φ = 6318950532840.

The previous prime is 20010010020919. The next prime is 20010010021069. The reversal of 20010010021002 is 20012001001002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29254400274 + ... + 29254400957.

It is an arithmetic number, because the mean of its divisors is an integer number (1901536040040).

Almost surely, 2^{20010010021002} is an apocalyptic number.

20010010021002 is an abundant number, since it is smaller than the sum of its proper divisors (25626854939958).

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

20010010021002 is a wasteful number, since it uses less digits than its factorization.

20010010021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58508801258 (or 58508801255 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20010010021002 its reverse (20012001001002), we get a palindrome (40022011022004).

The spelling of 20010010021002 in words is "twenty trillion, ten billion, ten million, twenty-one thousand, two".