20021101121210 has 64 divisors (see below), whose sum is σ = 41403485249280. Its totient is φ = 6828187914240.

The previous prime is 20021101121209. The next prime is 20021101121249. The reversal of 20021101121210 is 1212110112002.

It is a super-2 number, since 2×20021101121210² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 71167706 + ... + 71448474.

It is an arithmetic number, because the mean of its divisors is an integer number (646929457020).

Almost surely, 2^{20021101121210} is an apocalyptic number.

20021101121210 is an abundant number, since it is smaller than the sum of its proper divisors (21382384128070).

20021101121210 is a wasteful number, since it uses less digits than its factorization.

20021101121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286151.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20021101121210 its reverse (1212110112002), we get a palindrome (21233211233212).

The spelling of 20021101121210 in words is "twenty trillion, twenty-one billion, one hundred one million, one hundred twenty-one thousand, two hundred ten".