121210020331 has 4 divisors (see below), whose sum is σ = 121214318632. Its totient is φ = 121205722032.

The previous prime is 121210020329. The next prime is 121210020419. The reversal of 121210020331 is 133020012121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121210020331 - 2¹ = 121210020329 is a prime.

It is a super-2 number, since 2×121210020331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121210020131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2106570 + ... + 2163343.

It is an arithmetic number, because the mean of its divisors is an integer number (30303579658).

Almost surely, 2^121210020331 is an apocalyptic number.

121210020331 is a deficient number, since it is larger than the sum of its proper divisors (4298301).

121210020331 is an equidigital number, since it uses as much as digits as its factorization.

121210020331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4298300.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121210020331 its reverse (133020012121), we get a palindrome (254230032452).

The spelling of 121210020331 in words is "one hundred twenty-one billion, two hundred ten million, twenty thousand, three hundred thirty-one".