1021222002372 has 96 divisors (see below), whose sum is σ = 2803763579904. Its totient is φ = 285214684800.

The previous prime is 1021222002371. The next prime is 1021222002373. The reversal of 1021222002372 is 2732002221201.

It is an interprime number because it is at equal distance from previous prime (1021222002371) and next prime (1021222002373).

It is not an unprimeable number, because it can be changed into a prime (1021222002371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650347 + ... + 1570157.

It is an arithmetic number, because the mean of its divisors is an integer number (29205870624).

Almost surely, 2^{1021222002372} is an apocalyptic number.

1021222002372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021222002372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1401881789952).

1021222002372 is an abundant number, since it is smaller than the sum of its proper divisors (1782541577532).

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

1021222002372 is a wasteful number, since it uses less digits than its factorization.

1021222002372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920489 (or 920487 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

Adding to 1021222002372 its reverse (2732002221201), we get a palindrome (3753224223573).

The spelling of 1021222002372 in words is "one trillion, twenty-one billion, two hundred twenty-two million, two thousand, three hundred seventy-two".