101001020220 has 36 divisors (see below), whose sum is σ = 306369761880. Its totient is φ = 26933605344.

The previous prime is 101001020213. The next prime is 101001020269. The reversal of 101001020220 is 22020100101.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280558210 + ... + 280558569.

Almost surely, 2^101001020220 is an apocalyptic number.

101001020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101001020220 is an abundant number, since it is smaller than the sum of its proper divisors (205368741660).

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

101001020220 is a wasteful number, since it uses less digits than its factorization.

101001020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561116794 (or 561116789 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 101001020220 its reverse (22020100101), we get a palindrome (123021120321).

The spelling of 101001020220 in words is "one hundred one billion, one million, twenty thousand, two hundred twenty".