120111212012021 has 8 divisors (see below), whose sum is σ = 124278772768920. Its totient is φ = 115945370910208.

The previous prime is 120111212012017. The next prime is 120111212012039. The reversal of 120111212012021 is 120210212111021.

It can be written as a sum of positive squares in 4 ways, for example, as 192045532900 + 119919166479121 = 438230^2 + 10950761^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 120111212012021 - 2² = 120111212012017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111212812021) 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, 429771656 + ... + 430051041.

It is an arithmetic number, because the mean of its divisors is an integer number (15534846596115).

Almost surely, 2^{120111212012021} is an apocalyptic number.

It is an amenable number.

120111212012021 is a deficient number, since it is larger than the sum of its proper divisors (4167560756899).

120111212012021 is an equidigital number, since it uses as much as digits as its factorization.

120111212012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859827543.

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

Adding to 120111212012021 its reverse (120210212111021), we get a palindrome (240321424123042).

The spelling of 120111212012021 in words is "one hundred twenty trillion, one hundred eleven billion, two hundred twelve million, twelve thousand, twenty-one".