121102010215 has 16 divisors (see below), whose sum is σ = 145568743488. Its totient is φ = 96717494016.

The previous prime is 121102010201. The next prime is 121102010219. The reversal of 121102010215 is 512010201121.

It is a cyclic number.

It is not a de Polignac number, because 121102010215 - 2⁹ = 121102009703 is a prime.

It is a super-2 number, since 2×121102010215² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102010219) 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 15 ways as a sum of consecutive naturals, for example, 13263982 + ... + 13273108.

It is an arithmetic number, because the mean of its divisors is an integer number (9098046468).

Almost surely, 2^121102010215 is an apocalyptic number.

121102010215 is a deficient number, since it is larger than the sum of its proper divisors (24466733273).

121102010215 is an equidigital number, since it uses as much as digits as its factorization.

121102010215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13338.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 121102010215 its reverse (512010201121), we get a palindrome (633112211336).

The spelling of 121102010215 in words is "one hundred twenty-one billion, one hundred two million, ten thousand, two hundred fifteen".