1022020101220 has 24 divisors (see below), whose sum is σ = 2153099229624. Its totient is φ = 407501942016.

The previous prime is 1022020101199. The next prime is 1022020101241. The reversal of 1022020101220 is 221010202201.

It is a happy number.

1022020101220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1022020101199) and next prime (1022020101241).

It can be written as a sum of positive squares in 4 ways, for example, as 78728503396 + 943291597824 = 280586^2 + 971232^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1022020101220.

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, 81624739 + ... + 81637258.

It is an arithmetic number, because the mean of its divisors is an integer number (89712467901).

Almost surely, 2^{1022020101220} is an apocalyptic number.

1022020101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022020101220 is an abundant number, since it is smaller than the sum of its proper divisors (1131079128404).

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

1022020101220 is a wasteful number, since it uses less digits than its factorization.

1022020101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163262319 (or 163262317 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1022020101220 its reverse (221010202201), we get a palindrome (1243030303421).

The spelling of 1022020101220 in words is "one trillion, twenty-two billion, twenty million, one hundred one thousand, two hundred twenty".