22121110202001 has 16 divisors (see below), whose sum is σ = 30931856102400. Its totient is φ = 14035329689040.

The previous prime is 22121110201997. The next prime is 22121110202027. The reversal of 22121110202001 is 10020201112122.

It is not a de Polignac number, because 22121110202001 - 2² = 22121110201997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121110202701) 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, 805503355 + ... + 805530816.

It is an arithmetic number, because the mean of its divisors is an integer number (1933241006400).

Almost surely, 2^{22121110202001} is an apocalyptic number.

It is an amenable number.

22121110202001 is a deficient number, since it is larger than the sum of its proper divisors (8810745900399).

22121110202001 is a wasteful number, since it uses less digits than its factorization.

22121110202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611034396.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22121110202001 its reverse (10020201112122), we get a palindrome (32141311314123).

The spelling of 22121110202001 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred ten million, two hundred two thousand, one".