120211211202121 has 16 divisors (see below), whose sum is σ = 131234330304000. Its totient is φ = 109441883687040.

The previous prime is 120211211202067. The next prime is 120211211202127. The reversal of 120211211202121 is 121202112112021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 120211211202121 - 2²¹ = 120211209104969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120211211202127) 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, 45695016 + ... + 48254086.

It is an arithmetic number, because the mean of its divisors is an integer number (8202145644000).

Almost surely, 2^{120211211202121} is an apocalyptic number.

It is an amenable number.

120211211202121 is a deficient number, since it is larger than the sum of its proper divisors (11023119101879).

120211211202121 is a wasteful number, since it uses less digits than its factorization.

120211211202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608656.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 120211211202121 its reverse (121202112112021), we get a palindrome (241413323314142).

The spelling of 120211211202121 in words is "one hundred twenty trillion, two hundred eleven billion, two hundred eleven million, two hundred two thousand, one hundred twenty-one".