70031012121 has 48 divisors (see below), whose sum is σ = 118072905600. Its totient is φ = 39981483360.

The previous prime is 70031012071. The next prime is 70031012131. The reversal of 70031012121 is 12121013007.

It is a happy number.

It is not a de Polignac number, because 70031012121 - 2¹⁴ = 70030995737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70031012094 and 70031012103.

It is not an unprimeable number, because it can be changed into a prime (70031012131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3605191 + ... + 3624563.

It is an arithmetic number, because the mean of its divisors is an integer number (2459852200).

Almost surely, 2^70031012121 is an apocalyptic number.

It is an amenable number.

70031012121 is a deficient number, since it is larger than the sum of its proper divisors (48041893479).

70031012121 is a wasteful number, since it uses less digits than its factorization.

70031012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20571 (or 20554 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

Adding to 70031012121 its reverse (12121013007), we get a palindrome (82152025128).

The spelling of 70031012121 in words is "seventy billion, thirty-one million, twelve thousand, one hundred twenty-one".