211220010020121 has 8 divisors (see below), whose sum is σ = 293871318288960. Its totient is φ = 134691020882352.

The previous prime is 211220010020113. The next prime is 211220010020143. The reversal of 211220010020121 is 121020010022112.

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

It is not a de Polignac number, because 211220010020121 - 2³ = 211220010020113 is a prime.

It is a super-2 number, since 2×211220010020121² (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 211220010020121.

It is not an unprimeable number, because it can be changed into a prime (211220010020321) 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 7 ways as a sum of consecutive naturals, for example, 1530579782686 + ... + 1530579782823.

It is an arithmetic number, because the mean of its divisors is an integer number (36733914786120).

Almost surely, 2^{211220010020121} is an apocalyptic number.

It is an amenable number.

211220010020121 is a deficient number, since it is larger than the sum of its proper divisors (82651308268839).

211220010020121 is a wasteful number, since it uses less digits than its factorization.

211220010020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061159565535.

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

Adding to 211220010020121 its reverse (121020010022112), we get a palindrome (332240020042233).

The spelling of 211220010020121 in words is "two hundred eleven trillion, two hundred twenty billion, ten million, twenty thousand, one hundred twenty-one".