2121122200001 has 16 divisors (see below), whose sum is σ = 2448259618560. Its totient is φ = 1800016516800.

The previous prime is 2121122199967. The next prime is 2121122200003. The reversal of 2121122200001 is 1000022211212.

It is a cyclic number.

It is not a de Polignac number, because 2121122200001 - 2²² = 2121118005697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121122200003) 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, 17557535 + ... + 17677931.

It is an arithmetic number, because the mean of its divisors is an integer number (153016226160).

Almost surely, 2^{2121122200001} is an apocalyptic number.

It is an amenable number.

2121122200001 is a deficient number, since it is larger than the sum of its proper divisors (327137418559).

2121122200001 is a wasteful number, since it uses less digits than its factorization.

2121122200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145424.

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

Adding to 2121122200001 its reverse (1000022211212), we get a palindrome (3121144411213).

The spelling of 2121122200001 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred thousand, one".