121121000201001 has 16 divisors (see below), whose sum is σ = 168334900921664. Its totient is φ = 77392361559744.

The previous prime is 121121000200973. The next prime is 121121000201059. The reversal of 121121000201001 is 100102000121121.

It is not a de Polignac number, because 121121000201001 - 2¹⁸ = 121120999938857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121121000201101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8143128250 + ... + 8143143123.

It is an arithmetic number, because the mean of its divisors is an integer number (10520931307604).

Almost surely, 2^{121121000201001} is an apocalyptic number.

It is an amenable number.

121121000201001 is a deficient number, since it is larger than the sum of its proper divisors (47213900720663).

121121000201001 is a wasteful number, since it uses less digits than its factorization.

121121000201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16286271480.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121121000201001 its reverse (100102000121121), we get a palindrome (221223000322122).

The spelling of 121121000201001 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred one thousand, one".