211021002120121 has 8 divisors (see below), whose sum is σ = 223967257627680. Its totient is φ = 198133997210688.

The previous prime is 211021002120107. The next prime is 211021002120157. The reversal of 211021002120121 is 121021200120112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211021002120121 - 2¹³ = 211021002111929 is a prime.

It is a super-2 number, since 2×211021002120121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211021002120095 and 211021002120104.

It is not an unprimeable number, because it can be changed into a prime (211021002120191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14812642191 + ... + 14812656436.

It is an arithmetic number, because the mean of its divisors is an integer number (27995907203460).

Almost surely, 2^{211021002120121} is an apocalyptic number.

It is an amenable number.

211021002120121 is a deficient number, since it is larger than the sum of its proper divisors (12946255507559).

211021002120121 is a wasteful number, since it uses less digits than its factorization.

211021002120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29625299063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211021002120121 its reverse (121021200120112), we get a palindrome (332042202240233).

The spelling of 211021002120121 in words is "two hundred eleven trillion, twenty-one billion, two million, one hundred twenty thousand, one hundred twenty-one".