21022020022101 has 64 divisors (see below), whose sum is σ = 32889957230592. Its totient is φ = 11692800000000.

The previous prime is 21022020022039. The next prime is 21022020022103. The reversal of 21022020022101 is 10122002022012.

It is not a de Polignac number, because 21022020022101 - 2¹⁷ = 21022019891029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022020022103) 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, 800795226 + ... + 800821476.

It is an arithmetic number, because the mean of its divisors is an integer number (513905581728).

Almost surely, 2^{21022020022101} is an apocalyptic number.

21022020022101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21022020022101 is a deficient number, since it is larger than the sum of its proper divisors (11867937208491).

21022020022101 is a wasteful number, since it uses less digits than its factorization.

21022020022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28394.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21022020022101 its reverse (10122002022012), we get a palindrome (31144022044113).

The spelling of 21022020022101 in words is "twenty-one trillion, twenty-two billion, twenty million, twenty-two thousand, one hundred one".