101000021122020 has 384 divisors, whose sum is σ = 309169091911680. Its totient is φ = 24540832604160.

The previous prime is 101000021122009. The next prime is 101000021122057. The reversal of 101000021122020 is 20221120000101.

It is a super-2 number, since 2×101000021122020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 101000021121987 and 101000021122005.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1121890729 + ... + 1121980751.

It is an arithmetic number, because the mean of its divisors is an integer number (805127843520).

Almost surely, 2^{101000021122020} is an apocalyptic number.

101000021122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101000021122020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154584545955840).

101000021122020 is an abundant number, since it is smaller than the sum of its proper divisors (208169070789660).

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

101000021122020 is a wasteful number, since it uses less digits than its factorization.

101000021122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90395 (or 90393 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 101000021122020 its reverse (20221120000101), we get a palindrome (121221141122121).

The spelling of 101000021122020 in words is "one hundred one trillion, twenty-one million, one hundred twenty-two thousand, twenty".