20012211201210 has 64 divisors (see below), whose sum is σ = 48779543174400. Its totient is φ = 5253863982080.

The previous prime is 20012211201167. The next prime is 20012211201221. The reversal of 20012211201210 is 1210211221002.

It is a super-2 number, since 2×20012211201210² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20012211201210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19304646 + ... + 20314865.

It is an arithmetic number, because the mean of its divisors is an integer number (762180362100).

Almost surely, 2^{20012211201210} is an apocalyptic number.

20012211201210 is an abundant number, since it is smaller than the sum of its proper divisors (28767331973190).

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

20012211201210 is a wasteful number, since it uses less digits than its factorization.

20012211201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39619783.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20012211201210 its reverse (1210211221002), we get a palindrome (21222422422212).

The spelling of 20012211201210 in words is "twenty trillion, twelve billion, two hundred eleven million, two hundred one thousand, two hundred ten".