101021220021020 has 48 divisors (see below), whose sum is σ = 228505366934208. Its totient is φ = 37293286871040.

The previous prime is 101021220020999. The next prime is 101021220021079. The reversal of 101021220021020 is 20120022120101.

It is a junction number, because it is equal to n+sod(n) for n = 101021220020986 and 101021220021004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34290464 + ... + 37119783.

It is an arithmetic number, because the mean of its divisors is an integer number (4760528477796).

Almost surely, 2^{101021220021020} is an apocalyptic number.

101021220021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101021220021020 is an abundant number, since it is smaller than the sum of its proper divisors (127484146913188).

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

101021220021020 is a wasteful number, since it uses less digits than its factorization.

101021220021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71415710 (or 71415708 counting only the distinct ones).

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

Adding to 101021220021020 its reverse (20120022120101), we get a palindrome (121141242141121).

The spelling of 101021220021020 in words is "one hundred one trillion, twenty-one billion, two hundred twenty million, twenty-one thousand, twenty".