20221221031000 has 64 divisors (see below), whose sum is σ = 51619262441760. Its totient is φ = 7353171280000.

The previous prime is 20221221030961. The next prime is 20221221031057. The reversal of 20221221031000 is 13012212202.

It is a happy number.

It is a super-2 number, since 2×20221221031000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 919135411 + ... + 919157410.

Almost surely, 2^{20221221031000} is an apocalyptic number.

20221221031000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221221031000 is an abundant number, since it is smaller than the sum of its proper divisors (31398041410760).

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

20221221031000 is a wasteful number, since it uses less digits than its factorization.

20221221031000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838292853 (or 1838292839 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20221221031000 its reverse (13012212202), we get a palindrome (20234233243202).

It can be divided in two parts, 202212 and 21031000, that added together give a palindrome (21233212).

The spelling of 20221221031000 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, thirty-one thousand".