1012023032220 has 72 divisors (see below), whose sum is σ = 3069962846496. Its totient is φ = 269858773632.

The previous prime is 1012023032197. The next prime is 1012023032233. The reversal of 1012023032220 is 222303202101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1012023032193 and 1012023032202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3588889 + ... + 3860591.

It is an arithmetic number, because the mean of its divisors is an integer number (42638372868).

Almost surely, 2^{1012023032220} is an apocalyptic number.

1012023032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012023032220 is an abundant number, since it is smaller than the sum of its proper divisors (2057939814276).

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

1012023032220 is a wasteful number, since it uses less digits than its factorization.

1012023032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292411 (or 292406 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1012023032220 its reverse (222303202101), we get a palindrome (1234326234321).

The spelling of 1012023032220 in words is "one trillion, twelve billion, twenty-three million, thirty-two thousand, two hundred twenty".