101222021000 has 32 divisors (see below), whose sum is σ = 236859531480. Its totient is φ = 40488808000.

The previous prime is 101222020981. The next prime is 101222021003. The reversal of 101222021000 is 120222101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6760457284 + 94461563716 = 82222^2 + 307346^2 .

It is not an unprimeable number, because it can be changed into a prime (101222021003) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 50610011 + ... + 50612010.

Almost surely, 2^101222021000 is an apocalyptic number.

101222021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101222021000 is an abundant number, since it is smaller than the sum of its proper divisors (135637510480).

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

101222021000 is a wasteful number, since it uses less digits than its factorization.

101222021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101222042 (or 101222028 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 101222021000 its reverse (120222101), we get a palindrome (101342243101).

The spelling of 101222021000 in words is "one hundred one billion, two hundred twenty-two million, twenty-one thousand".