21022021111010 has 128 divisors (see below), whose sum is σ = 41980322926080. Its totient is φ = 7550568216576.

The previous prime is 21022021110997. The next prime is 21022021111019. The reversal of 21022021111010 is 1011112022012.

It is a super-2 number, since 2×21022021111010² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21022021111019) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 353620349 + ... + 353679791.

It is an arithmetic number, because the mean of its divisors is an integer number (327971272860).

Almost surely, 2^{21022021111010} is an apocalyptic number.

21022021111010 is a deficient number, since it is larger than the sum of its proper divisors (20958301815070).

21022021111010 is a wasteful number, since it uses less digits than its factorization.

21022021111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60972.

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

Adding to 21022021111010 its reverse (1011112022012), we get a palindrome (22033133133022).

The spelling of 21022021111010 in words is "twenty-one trillion, twenty-two billion, twenty-one million, one hundred eleven thousand, ten".