1001022012220 has 12 divisors (see below), whose sum is σ = 2102146225704. Its totient is φ = 400408804880.

The previous prime is 1001022012217. The next prime is 1001022012233. The reversal of 1001022012220 is 222102201001.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001022012220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25025550286 + ... + 25025550325.

It is an arithmetic number, because the mean of its divisors is an integer number (175178852142).

Almost surely, 2^{1001022012220} is an apocalyptic number.

1001022012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001022012220 is an abundant number, since it is smaller than the sum of its proper divisors (1101124213484).

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

1001022012220 is a wasteful number, since it uses less digits than its factorization.

1001022012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50051100620 (or 50051100618 counting only the distinct ones).

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

Adding to 1001022012220 its reverse (222102201001), we get a palindrome (1223124213221).

The spelling of 1001022012220 in words is "one trillion, one billion, twenty-two million, twelve thousand, two hundred twenty".