101020220021 has 8 divisors (see below), whose sum is σ = 117408488640. Its totient is φ = 85121153568.

The previous prime is 101020219991. The next prime is 101020220023. The reversal of 101020220021 is 120022020101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101020220021 - 2¹⁸ = 101019957877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101020219984 and 101020220011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101020220023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122300096 + ... + 122300921.

It is an arithmetic number, because the mean of its divisors is an integer number (14676061080).

Almost surely, 2^101020220021 is an apocalyptic number.

It is an amenable number.

101020220021 is a deficient number, since it is larger than the sum of its proper divisors (16388268619).

101020220021 is an equidigital number, since it uses as much as digits as its factorization.

101020220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244601083.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 101020220021 its reverse (120022020101), we get a palindrome (221042240122).

The spelling of 101020220021 in words is "one hundred one billion, twenty million, two hundred twenty thousand, twenty-one".