121012215601 has 8 divisors (see below), whose sum is σ = 128353658400. Its totient is φ = 113768010720.

The previous prime is 121012215547. The next prime is 121012215607. The reversal of 121012215601 is 106512210121.

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 121012215601 - 2¹⁵ = 121012182833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121012215607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24306916 + ... + 24311893.

It is an arithmetic number, because the mean of its divisors is an integer number (16044207300).

Almost surely, 2^121012215601 is an apocalyptic number.

It is an amenable number.

121012215601 is a deficient number, since it is larger than the sum of its proper divisors (7341442799).

121012215601 is a wasteful number, since it uses less digits than its factorization.

121012215601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48618959.

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 121012215601 its reverse (106512210121), we get a palindrome (227524425722).

The spelling of 121012215601 in words is "one hundred twenty-one billion, twelve million, two hundred fifteen thousand, six hundred one".