21020212011110 has 16 divisors (see below), whose sum is σ = 40746872514096. Its totient is φ = 7761309050208.

The previous prime is 21020212011079. The next prime is 21020212011191. The reversal of 21020212011110 is 1111021202012.

It is a super-2 number, since 2×21020212011110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80846969144 + ... + 80846969403.

It is an arithmetic number, because the mean of its divisors is an integer number (2546679532131).

Almost surely, 2^{21020212011110} is an apocalyptic number.

21020212011110 is a deficient number, since it is larger than the sum of its proper divisors (19726660502986).

21020212011110 is a wasteful number, since it uses less digits than its factorization.

21020212011110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161693938567.

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

Adding to 21020212011110 its reverse (1111021202012), we get a palindrome (22131233213122).

The spelling of 21020212011110 in words is "twenty-one trillion, twenty billion, two hundred twelve million, eleven thousand, one hundred ten".