1021300120220 has 48 divisors (see below), whose sum is σ = 2270974291488. Its totient is φ = 384475330560.

The previous prime is 1021300120213. The next prime is 1021300120273. The reversal of 1021300120220 is 220210031201.

It is a happy number.

It is a super-2 number, since 2×1021300120220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021300120195 and 1021300120204.

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, 16547939 + ... + 16609541.

It is an arithmetic number, because the mean of its divisors is an integer number (47311964406).

Almost surely, 2^{1021300120220} is an apocalyptic number.

1021300120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021300120220 is an abundant number, since it is smaller than the sum of its proper divisors (1249674171268).

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

1021300120220 is a wasteful number, since it uses less digits than its factorization.

1021300120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110390 (or 110388 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1021300120220 its reverse (220210031201), we get a palindrome (1241510151421).

The spelling of 1021300120220 in words is "one trillion, twenty-one billion, three hundred million, one hundred twenty thousand, two hundred twenty".