22121011001001 has 64 divisors (see below), whose sum is σ = 32609159847936. Its totient is φ = 13227201504000.

The previous prime is 22121011000987. The next prime is 22121011001101. The reversal of 22121011001001 is 10010011012122.

It is not a de Polignac number, because 22121011001001 - 2¹³ = 22121010992809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121011001101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1406554800 + ... + 1406570526.

It is an arithmetic number, because the mean of its divisors is an integer number (509518122624).

Almost surely, 2^{22121011001001} is an apocalyptic number.

It is an amenable number.

22121011001001 is a deficient number, since it is larger than the sum of its proper divisors (10488148846935).

22121011001001 is a wasteful number, since it uses less digits than its factorization.

22121011001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17302.

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

Adding to 22121011001001 its reverse (10010011012122), we get a palindrome (32131022013123).

It can be divided in two parts, 221210 and 11001001, that added together give a palindrome (11222211).

The spelling of 22121011001001 in words is "twenty-two trillion, one hundred twenty-one billion, eleven million, one thousand, one".