1021010122220 has 24 divisors (see below), whose sum is σ = 2339041371408. Its totient is φ = 371276408000.

The previous prime is 1021010122157. The next prime is 1021010122229. The reversal of 1021010122220 is 222210101201.

It is a junction number, because it is equal to n+sod(n) for n = 1021010122195 and 1021010122204.

It is not an unprimeable number, because it can be changed into a prime (1021010122229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2320477331 + ... + 2320477770.

It is an arithmetic number, because the mean of its divisors is an integer number (97460057142).

Almost surely, 2^{1021010122220} is an apocalyptic number.

1021010122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021010122220 is an abundant number, since it is smaller than the sum of its proper divisors (1318031249188).

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

1021010122220 is a wasteful number, since it uses less digits than its factorization.

1021010122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4640955121 (or 4640955119 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1021010122220 its reverse (222210101201), we get a palindrome (1243220223421).

The spelling of 1021010122220 in words is "one trillion, twenty-one billion, ten million, one hundred twenty-two thousand, two hundred twenty".