21010121210022 has 24 divisors (see below), whose sum is σ = 48880690162776. Its totient is φ = 6002891774208.

The previous prime is 21010121209991. The next prime is 21010121210041. The reversal of 21010121210022 is 22001212101012.

It is a super-3 number, since 3×21010121210022³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21010121209983 and 21010121210010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35731498363 + ... + 35731498950.

It is an arithmetic number, because the mean of its divisors is an integer number (2036695423449).

Almost surely, 2^{21010121210022} is an apocalyptic number.

21010121210022 is an abundant number, since it is smaller than the sum of its proper divisors (27870568952754).

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

21010121210022 is a wasteful number, since it uses less digits than its factorization.

21010121210022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71462997332 (or 71462997325 counting only the distinct ones).

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

Adding to 21010121210022 its reverse (22001212101012), we get a palindrome (43011333311034).

The spelling of 21010121210022 in words is "twenty-one trillion, ten billion, one hundred twenty-one million, two hundred ten thousand, twenty-two".