21101121002022 has 16 divisors (see below), whose sum is σ = 42202680098112. Its totient is φ = 7033633985000.

The previous prime is 21101121001999. The next prime is 21101121002023. The reversal of 21101121002022 is 22020012110112.

It is a junction number, because it is equal to n+sod(n) for n = 21101121001992 and 21101121002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101121002023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17626104 + ... + 18785147.

It is an arithmetic number, because the mean of its divisors is an integer number (2637667506132).

Almost surely, 2^{21101121002022} is an apocalyptic number.

21101121002022 is an abundant number, since it is smaller than the sum of its proper divisors (21101559096090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21101121002022 is a wasteful number, since it uses less digits than its factorization.

21101121002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36507843.

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

Adding to 21101121002022 its reverse (22020012110112), we get a palindrome (43121133112134).

The spelling of 21101121002022 in words is "twenty-one trillion, one hundred one billion, one hundred twenty-one million, two thousand, twenty-two".