22011212002001 has 16 divisors (see below), whose sum is σ = 22297085176080. Its totient is φ = 21726891429120.

The previous prime is 22011212001991. The next prime is 22011212002019. The reversal of 22011212002001 is 10020021211022.

It can be written as a sum of positive squares in 8 ways, for example, as 137771622976 + 21873440379025 = 371176^2 + 4676905^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011212002001 - 2³⁸ = 21736334095057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011218002001) 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, 189463391 + ... + 189579531.

It is an arithmetic number, because the mean of its divisors is an integer number (1393567823505).

Almost surely, 2^{22011212002001} is an apocalyptic number.

It is an amenable number.

22011212002001 is a deficient number, since it is larger than the sum of its proper divisors (285873174079).

22011212002001 is a wasteful number, since it uses less digits than its factorization.

22011212002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122804.

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

Adding to 22011212002001 its reverse (10020021211022), we get a palindrome (32031233213023).

The spelling of 22011212002001 in words is "twenty-two trillion, eleven billion, two hundred twelve million, two thousand, one".