120111212020121 has 32 divisors (see below), whose sum is σ = 140923322781696. Its totient is φ = 100249019640000.

The previous prime is 120111212020117. The next prime is 120111212020123. The reversal of 120111212020121 is 121020212111021.

It is not a de Polignac number, because 120111212020121 - 2² = 120111212020117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120111212020121.

It is not an unprimeable number, because it can be changed into a prime (120111212020123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135728516 + ... + 136610586.

It is an arithmetic number, because the mean of its divisors is an integer number (4403853836928).

Almost surely, 2^{120111212020121} is an apocalyptic number.

It is an amenable number.

120111212020121 is a deficient number, since it is larger than the sum of its proper divisors (20812110761575).

120111212020121 is an equidigital number, since it uses as much as digits as its factorization.

120111212020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885533.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 120111212020121 its reverse (121020212111021), we get a palindrome (241131424131142).

The spelling of 120111212020121 in words is "one hundred twenty trillion, one hundred eleven billion, two hundred twelve million, twenty thousand, one hundred twenty-one".