121020000221001 has 32 divisors (see below), whose sum is σ = 190361449783296. Its totient is φ = 66923057664000.

The previous prime is 121020000220961. The next prime is 121020000221059. The reversal of 121020000221001 is 100122000020121.

It is not a de Polignac number, because 121020000221001 - 2⁶ = 121020000220937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121020000221801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113629966 + ... + 114690056.

It is an arithmetic number, because the mean of its divisors is an integer number (5948795305728).

Almost surely, 2^{121020000221001} is an apocalyptic number.

It is an amenable number.

121020000221001 is a deficient number, since it is larger than the sum of its proper divisors (69341449562295).

121020000221001 is a wasteful number, since it uses less digits than its factorization.

121020000221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235493.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121020000221001 its reverse (100122000020121), we get a palindrome (221142000241122).

The spelling of 121020000221001 in words is "one hundred twenty-one trillion, twenty billion, two hundred twenty-one thousand, one".