20212221010102 has 32 divisors (see below), whose sum is σ = 33086750860800. Its totient is φ = 9183982953600.

The previous prime is 20212221010057. The next prime is 20212221010141. The reversal of 20212221010102 is 20101012221202.

It is a happy number.

It is a super-2 number, since 2×20212221010102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925414702 + ... + 925436542.

It is an arithmetic number, because the mean of its divisors is an integer number (1033960964400).

Almost surely, 2^{20212221010102} is an apocalyptic number.

20212221010102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20212221010102 is a deficient number, since it is larger than the sum of its proper divisors (12874529850698).

20212221010102 is a wasteful number, since it uses less digits than its factorization.

20212221010102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35452.

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

Adding to 20212221010102 its reverse (20101012221202), we get a palindrome (40313233231304).

The spelling of 20212221010102 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-one million, ten thousand, one hundred two".