20221111001121 has 32 divisors (see below), whose sum is σ = 30411995927040. Its totient is φ = 11875160219904.

The previous prime is 20221111001033. The next prime is 20221111001183. The reversal of 20221111001121 is 12110011112202.

It is a happy number.

It is not a de Polignac number, because 20221111001121 - 2¹¹ = 20221110999073 is a prime.

It is a super-3 number, since 3×20221111001121³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20221111001121.

It is not an unprimeable number, because it can be changed into a prime (20221111001191) 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, 125630535 + ... + 125791388.

It is an arithmetic number, because the mean of its divisors is an integer number (950374872720).

Almost surely, 2^{20221111001121} is an apocalyptic number.

It is an amenable number.

20221111001121 is a deficient number, since it is larger than the sum of its proper divisors (10190884925919).

20221111001121 is a wasteful number, since it uses less digits than its factorization.

20221111001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251422045.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20221111001121 its reverse (12110011112202), we get a palindrome (32331122113323).

The spelling of 20221111001121 in words is "twenty trillion, two hundred twenty-one billion, one hundred eleven million, one thousand, one hundred twenty-one".