121202221001 has 8 divisors (see below), whose sum is σ = 122463793704. Its totient is φ = 119940894720.

The previous prime is 121202220977. The next prime is 121202221039. The reversal of 121202221001 is 100122202121.

It can be written as a sum of positive squares in 4 ways, for example, as 1185011776 + 120017209225 = 34424^2 + 346435^2 .

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 121202221001 - 2³⁴ = 104022351817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121202221081) 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, 1026641 + ... + 1138593.

It is an arithmetic number, because the mean of its divisors is an integer number (15307974213).

Almost surely, 2^121202221001 is an apocalyptic number.

It is an amenable number.

121202221001 is a deficient number, since it is larger than the sum of its proper divisors (1261572703).

121202221001 is a wasteful number, since it uses less digits than its factorization.

121202221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123211.

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

Adding to 121202221001 its reverse (100122202121), we get a palindrome (221324423122).

The spelling of 121202221001 in words is "one hundred twenty-one billion, two hundred two million, two hundred twenty-one thousand, one".