210211022020121 has 16 divisors (see below), whose sum is σ = 222437696260800. Its totient is φ = 198100793899008.

The previous prime is 210211022020003. The next prime is 210211022020123. The reversal of 210211022020121 is 121020220112012.

It is a de Polignac number, because none of the positive numbers 2^k-210211022020121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210211022020121.

It is not an unprimeable number, because it can be changed into a prime (210211022020123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47675750 + ... + 51897968.

It is an arithmetic number, because the mean of its divisors is an integer number (13902356016300).

Almost surely, 2^{210211022020121} is an apocalyptic number.

It is an amenable number.

210211022020121 is a deficient number, since it is larger than the sum of its proper divisors (12226674240679).

210211022020121 is a wasteful number, since it uses less digits than its factorization.

210211022020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236008.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210211022020121 its reverse (121020220112012), we get a palindrome (331231242132133).

The spelling of 210211022020121 in words is "two hundred ten trillion, two hundred eleven billion, twenty-two million, twenty thousand, one hundred twenty-one".