2209012100121 has 32 divisors (see below), whose sum is σ = 3045384579328. Its totient is φ = 1423214219520.

The previous prime is 2209012100089. The next prime is 2209012100143. The reversal of 2209012100121 is 1210012109022.

It is not a de Polignac number, because 2209012100121 - 2⁵ = 2209012100089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2209012100171) 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, 16468095 + ... + 16601691.

It is an arithmetic number, because the mean of its divisors is an integer number (95168268104).

Almost surely, 2^{2209012100121} is an apocalyptic number.

It is an amenable number.

2209012100121 is a deficient number, since it is larger than the sum of its proper divisors (836372479207).

2209012100121 is a wasteful number, since it uses less digits than its factorization.

2209012100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134641.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 2209012100121 its reverse (1210012109022), we get a palindrome (3419024209143).

The spelling of 2209012100121 in words is "two trillion, two hundred nine billion, twelve million, one hundred thousand, one hundred twenty-one".