20211111011210 has 48 divisors (see below), whose sum is σ = 43303768222176. Its totient is φ = 6768372052512.

The previous prime is 20211111011177. The next prime is 20211111011261. The reversal of 20211111011210 is 1211011111202.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 479597132 + ... + 479639271.

It is an arithmetic number, because the mean of its divisors is an integer number (902161837962).

Almost surely, 2^{20211111011210} is an apocalyptic number.

20211111011210 is an abundant number, since it is smaller than the sum of its proper divisors (23092657210966).

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

20211111011210 is a wasteful number, since it uses less digits than its factorization.

20211111011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959236467 (or 959236460 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20211111011210 its reverse (1211011111202), we get a palindrome (21422122122412).

The spelling of 20211111011210 in words is "twenty trillion, two hundred eleven billion, one hundred eleven million, eleven thousand, two hundred ten".