70102420121 has 32 divisors (see below), whose sum is σ = 77140377600. Its totient is φ = 63457992000.

The previous prime is 70102420117. The next prime is 70102420123. The reversal of 70102420121 is 12102420107.

It is not a de Polignac number, because 70102420121 - 2² = 70102420117 is a prime.

It is a super-3 number, since 3×70102420121³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70102420093 and 70102420102.

It is not an unprimeable number, because it can be changed into a prime (70102420123) 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, 19964756 + ... + 19968266.

It is an arithmetic number, because the mean of its divisors is an integer number (2410636800).

Almost surely, 2^70102420121 is an apocalyptic number.

It is an amenable number.

70102420121 is a deficient number, since it is larger than the sum of its proper divisors (7037957479).

70102420121 is a wasteful number, since it uses less digits than its factorization.

70102420121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3981.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 70102420121 its reverse (12102420107), we get a palindrome (82204840228).

The spelling of 70102420121 in words is "seventy billion, one hundred two million, four hundred twenty thousand, one hundred twenty-one".