21020101212022 has 32 divisors (see below), whose sum is σ = 34610196443040. Its totient is φ = 9495286859520.

The previous prime is 21020101212007. The next prime is 21020101212029. The reversal of 21020101212022 is 22021210102012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21020101211987 and 21020101212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020101212029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7695754 + ... + 10063042.

It is an arithmetic number, because the mean of its divisors is an integer number (1081568638845).

Almost surely, 2^{21020101212022} is an apocalyptic number.

21020101212022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21020101212022 is a deficient number, since it is larger than the sum of its proper divisors (13590095231018).

21020101212022 is a wasteful number, since it uses less digits than its factorization.

21020101212022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369808.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21020101212022 its reverse (22021210102012), we get a palindrome (43041311314034).

The spelling of 21020101212022 in words is "twenty-one trillion, twenty billion, one hundred one million, two hundred twelve thousand, twenty-two".