20113021211208 has 32 divisors (see below), whose sum is σ = 52468750987200. Its totient is φ = 6412847342528.

The previous prime is 20113021211207. The next prime is 20113021211249. The reversal of 20113021211208 is 80211212031102.

It is a happy number.

It is a super-3 number, since 3×20113021211208³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20113021211201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18218315763 + ... + 18218316866.

It is an arithmetic number, because the mean of its divisors is an integer number (1639648468350).

Almost surely, 2^{20113021211208} is an apocalyptic number.

It is an amenable number.

20113021211208 is an abundant number, since it is smaller than the sum of its proper divisors (32355729775992).

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

20113021211208 is a wasteful number, since it uses less digits than its factorization.

20113021211208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36436632661 (or 36436632657 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The spelling of 20113021211208 in words is "twenty trillion, one hundred thirteen billion, twenty-one million, two hundred eleven thousand, two hundred eight".