21022001121099 has 16 divisors (see below), whose sum is σ = 30610089578880. Its totient is φ = 12727009488960.

The previous prime is 21022001121067. The next prime is 21022001121109. The reversal of 21022001121099 is 99012110022012.

It is not a de Polignac number, because 21022001121099 - 2⁵ = 21022001121067 is a prime.

It is a super-2 number, since 2×21022001121099² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21022001111099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339899889 + ... + 339961730.

It is an arithmetic number, because the mean of its divisors is an integer number (1913130598680).

Almost surely, 2^{21022001121099} is an apocalyptic number.

21022001121099 is a deficient number, since it is larger than the sum of its proper divisors (9588088457781).

21022001121099 is a wasteful number, since it uses less digits than its factorization.

21022001121099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679862570.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 21022001121099 in words is "twenty-one trillion, twenty-two billion, one million, one hundred twenty-one thousand, ninety-nine".