1002011203220 has 24 divisors (see below), whose sum is σ = 2104329520608. Its totient is φ = 400784292000.

The previous prime is 1002011203217. The next prime is 1002011203261. The reversal of 1002011203220 is 223021102001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1002011203195 and 1002011203204.

It is a congruent number.

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, 851606 + ... + 1652045.

It is an arithmetic number, because the mean of its divisors is an integer number (87680396692).

Almost surely, 2^{1002011203220} is an apocalyptic number.

1002011203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002011203220 is an abundant number, since it is smaller than the sum of its proper divisors (1102318317388).

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

1002011203220 is a wasteful number, since it uses less digits than its factorization.

1002011203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523671 (or 2523669 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1002011203220 its reverse (223021102001), we get a palindrome (1225032305221).

The spelling of 1002011203220 in words is "one trillion, two billion, eleven million, two hundred three thousand, two hundred twenty".