121100102215 has 8 divisors (see below), whose sum is σ = 145623507840. Its totient is φ = 96677824992.

The previous prime is 121100102171. The next prime is 121100102231. The reversal of 121100102215 is 512201001121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121100102215 - 2¹⁷ = 121099971143 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25279464 + ... + 25284253.

It is an arithmetic number, because the mean of its divisors is an integer number (18202938480).

Almost surely, 2^121100102215 is an apocalyptic number.

121100102215 is a deficient number, since it is larger than the sum of its proper divisors (24523405625).

121100102215 is an equidigital number, since it uses as much as digits as its factorization.

121100102215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50564201.

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

Adding to 121100102215 its reverse (512201001121), we get a palindrome (633301103336).

The spelling of 121100102215 in words is "one hundred twenty-one billion, one hundred million, one hundred two thousand, two hundred fifteen".