121220002021001 has 32 divisors (see below), whose sum is σ = 131555773440000. Its totient is φ = 111031996933440.

The previous prime is 121220002020959. The next prime is 121220002021031. The reversal of 121220002021001 is 100120200022121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121220002021001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121220002021031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2212056800 + ... + 2212111598.

It is an arithmetic number, because the mean of its divisors is an integer number (4111117920000).

Almost surely, 2^{121220002021001} is an apocalyptic number.

It is an amenable number.

121220002021001 is a deficient number, since it is larger than the sum of its proper divisors (10335771418999).

121220002021001 is a wasteful number, since it uses less digits than its factorization.

121220002021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57309.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121220002021001 its reverse (100120200022121), we get a palindrome (221340202043122).

The spelling of 121220002021001 in words is "one hundred twenty-one trillion, two hundred twenty billion, two million, twenty-one thousand, one".