101051020 has 24 divisors (see below), whose sum is σ = 242522784. Its totient is φ = 34646016.

The previous prime is 101050997. The next prime is 101051021. The reversal of 101051020 is 20150101.

It is a happy number.

It is a super-2 number, since 2×101051020² = 20422617286080800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 101050988 and 101051006.

It is not an unprimeable number, because it can be changed into a prime (101051021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360757 + ... + 361036.

It is an arithmetic number, because the mean of its divisors is an integer number (10105116).

Almost surely, 2^101051020 is an apocalyptic number.

101051020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101051020 is an abundant number, since it is smaller than the sum of its proper divisors (141471764).

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

101051020 is a wasteful number, since it uses less digits than its factorization.

101051020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721809 (or 721807 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 101051020 is about 10052.4136405144. The cubic root of 101051020 is about 465.7793536281.

The spelling of 101051020 in words is "one hundred one million, fifty-one thousand, twenty".