211022120121 has 8 divisors (see below), whose sum is σ = 287349270144. Its totient is φ = 137688191760.

The previous prime is 211022120107. The next prime is 211022120131. The reversal of 211022120121 is 121021220112.

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

It is not a de Polignac number, because 211022120121 - 2¹⁰ = 211022119097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211022120121.

It is not an unprimeable number, because it can be changed into a prime (211022120131) 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, 748305250 + ... + 748305531.

It is an arithmetic number, because the mean of its divisors is an integer number (35918658768).

Almost surely, 2^211022120121 is an apocalyptic number.

It is an amenable number.

211022120121 is a deficient number, since it is larger than the sum of its proper divisors (76327150023).

211022120121 is a wasteful number, since it uses less digits than its factorization.

211022120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496610831.

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

Adding to 211022120121 its reverse (121021220112), we get a palindrome (332043340233).

Subtracting from 211022120121 its reverse (121021220112), we obtain a palindrome (90000900009).

The spelling of 211022120121 in words is "two hundred eleven billion, twenty-two million, one hundred twenty thousand, one hundred twenty-one".