20011020122002 has 32 divisors (see below), whose sum is σ = 39116564226432. Its totient is φ = 7450774136064.

The previous prime is 20011020121993. The next prime is 20011020122039. The reversal of 20011020122002 is 20022102011002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 3233839848 + ... + 3233846035.

It is an arithmetic number, because the mean of its divisors is an integer number (1222392632076).

Almost surely, 2^{20011020122002} is an apocalyptic number.

20011020122002 is a deficient number, since it is larger than the sum of its proper divisors (19105544104430).

20011020122002 is a wasteful number, since it uses less digits than its factorization.

20011020122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6467685922.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20011020122002 its reverse (20022102011002), we get a palindrome (40033122133004).

The spelling of 20011020122002 in words is "twenty trillion, eleven billion, twenty million, one hundred twenty-two thousand, two".