121070220215 has 16 divisors (see below), whose sum is σ = 166069509120. Its totient is φ = 83004404640.

The previous prime is 121070220209. The next prime is 121070220221. The reversal of 121070220215 is 512022070121.

It is an interprime number because it is at equal distance from previous prime (121070220209) and next prime (121070220221).

It is not a de Polignac number, because 121070220215 - 2¹² = 121070216119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120221 + ... + 506550.

It is an arithmetic number, because the mean of its divisors is an integer number (10379344320).

Almost surely, 2^121070220215 is an apocalyptic number.

121070220215 is a deficient number, since it is larger than the sum of its proper divisors (44999288905).

121070220215 is an equidigital number, since it uses as much as digits as its factorization.

121070220215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632302.

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 121070220215 its reverse (512022070121), we get a palindrome (633092290336).

The spelling of 121070220215 in words is "one hundred twenty-one billion, seventy million, two hundred twenty thousand, two hundred fifteen".