21021101122 has 16 divisors (see below), whose sum is σ = 36186958080. Its totient is φ = 8971347168.

The previous prime is 21021101107. The next prime is 21021101141. The reversal of 21021101122 is 22110112012.

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, 3137883 + ... + 3144574.

It is an arithmetic number, because the mean of its divisors is an integer number (2261684880).

Almost surely, 2^21021101122 is an apocalyptic number.

21021101122 is a deficient number, since it is larger than the sum of its proper divisors (15165856958).

21021101122 is a wasteful number, since it uses less digits than its factorization.

21021101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6282705.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21021101122 its reverse (22110112012), we get a palindrome (43131213134).

The spelling of 21021101122 in words is "twenty-one billion, twenty-one million, one hundred one thousand, one hundred twenty-two".