211121020010121 has 8 divisors (see below), whose sum is σ = 303148131296640. Its totient is φ = 129920627698512.

The previous prime is 211121020010111. The next prime is 211121020010123. The reversal of 211121020010121 is 121010020121112.

It is a happy number.

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

It is not a de Polignac number, because 211121020010121 - 2⁷ = 211121020009993 is a prime.

It is a super-2 number, since 2×211121020010121² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211121020010121.

It is not an unprimeable number, because it can be changed into a prime (211121020010123) 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, 2706679743681 + ... + 2706679743758.

It is an arithmetic number, because the mean of its divisors is an integer number (37893516412080).

Almost surely, 2^{211121020010121} is an apocalyptic number.

It is an amenable number.

211121020010121 is a deficient number, since it is larger than the sum of its proper divisors (92027111286519).

211121020010121 is a wasteful number, since it uses less digits than its factorization.

211121020010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5413359487455.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211121020010121 its reverse (121010020121112), we get a palindrome (332131040131233).

The spelling of 211121020010121 in words is "two hundred eleven trillion, one hundred twenty-one billion, twenty million, ten thousand, one hundred twenty-one".