21121202000211 has 64 divisors (see below), whose sum is σ = 30506286182400. Its totient is φ = 12970827717120.

The previous prime is 21121202000123. The next prime is 21121202000221. The reversal of 21121202000211 is 11200020212112.

It is not a de Polignac number, because 21121202000211 - 2¹⁷ = 21121201869139 is a prime.

It is a super-2 number, since 2×21121202000211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21121202000221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 63482256 + ... + 63814098.

It is an arithmetic number, because the mean of its divisors is an integer number (476660721600).

Almost surely, 2^{21121202000211} is an apocalyptic number.

21121202000211 is a deficient number, since it is larger than the sum of its proper divisors (9385084182189).

21121202000211 is a wasteful number, since it uses less digits than its factorization.

21121202000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332316.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21121202000211 its reverse (11200020212112), we get a palindrome (32321222212323).

The spelling of 21121202000211 in words is "twenty-one trillion, one hundred twenty-one billion, two hundred two million, two hundred eleven", and thus it is an aban number.