1020021010220 has 24 divisors (see below), whose sum is σ = 2147550678000. Its totient is φ = 406959536192.

The previous prime is 1020021010201. The next prime is 1020021010237. The reversal of 1020021010220 is 220101200201.

It is a happy number.

It is a super-2 number, since 2×1020021010220² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65546270 + ... + 65561829.

It is an arithmetic number, because the mean of its divisors is an integer number (89481278250).

Almost surely, 2^{1020021010220} is an apocalyptic number.

1020021010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020021010220 is an abundant number, since it is smaller than the sum of its proper divisors (1127529667780).

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

1020021010220 is a wasteful number, since it uses less digits than its factorization.

1020021010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131108497 (or 131108495 counting only the distinct ones).

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

Adding to 1020021010220 its reverse (220101200201), we get a palindrome (1240122210421).

The spelling of 1020021010220 in words is "one trillion, twenty billion, twenty-one million, ten thousand, two hundred twenty".