100202101221020 has 12 divisors (see below), whose sum is σ = 210424412564184. Its totient is φ = 40080840488400.

The previous prime is 100202101220993. The next prime is 100202101221029. The reversal of 100202101221020 is 20122101202001.

It is a super-2 number, since 2×100202101221020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100202101220986 and 100202101221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100202101221029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2505052530506 + ... + 2505052530545.

It is an arithmetic number, because the mean of its divisors is an integer number (17535367713682).

Almost surely, 2^{100202101221020} is an apocalyptic number.

100202101221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100202101221020 is an abundant number, since it is smaller than the sum of its proper divisors (110222311343164).

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

100202101221020 is a wasteful number, since it uses less digits than its factorization.

100202101221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5010105061060 (or 5010105061058 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100202101221020 its reverse (20122101202001), we get a palindrome (120324202423021).

The spelling of 100202101221020 in words is "one hundred trillion, two hundred two billion, one hundred one million, two hundred twenty-one thousand, twenty".