101011220021020 has 24 divisors (see below), whose sum is σ = 212144986918368. Its totient is φ = 40400407080000.

The previous prime is 101011220021009. The next prime is 101011220021053. The reversal of 101011220021020 is 20120022110101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254855056 + ... + 255251095.

It is an arithmetic number, because the mean of its divisors is an integer number (8839374454932).

Almost surely, 2^{101011220021020} is an apocalyptic number.

101011220021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101011220021020 is an abundant number, since it is smaller than the sum of its proper divisors (111133766897348).

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

101011220021020 is a wasteful number, since it uses less digits than its factorization.

101011220021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510116061 (or 510116059 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101011220021020 its reverse (20120022110101), we get a palindrome (121131242131121).

The spelling of 101011220021020 in words is "one hundred one trillion, eleven billion, two hundred twenty million, twenty-one thousand, twenty".