20000020021002 has 72 divisors (see below), whose sum is σ = 50408963684352. Its totient is φ = 5714206419600.

The previous prime is 20000020020973. The next prime is 20000020021021. The reversal of 20000020021002 is 20012002000002.

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 35 ways as a sum of consecutive naturals, for example, 81613477 + ... + 81858167.

It is an arithmetic number, because the mean of its divisors is an integer number (700124495616).

Almost surely, 2^{20000020021002} is an apocalyptic number.

20000020021002 is an abundant number, since it is smaller than the sum of its proper divisors (30408943663350).

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

20000020021002 is a wasteful number, since it uses less digits than its factorization.

20000020021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337384 (or 337374 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20000020021002 its reverse (20012002000002), we get a palindrome (40012022021004).

The spelling of 20000020021002 in words is "twenty trillion, twenty million, twenty-one thousand, two".