1031223421100 has 72 divisors (see below), whose sum is σ = 2356072482960. Its totient is φ = 390689637120.

The previous prime is 1031223421099. The next prime is 1031223421139. The reversal of 1031223421100 is 11243221301.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 8522222 + ... + 8642378.

It is an arithmetic number, because the mean of its divisors is an integer number (32723228930).

Almost surely, 2^{1031223421100} is an apocalyptic number.

1031223421100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031223421100 is an abundant number, since it is smaller than the sum of its proper divisors (1324849061860).

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

1031223421100 is a wasteful number, since it uses less digits than its factorization.

1031223421100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124707 (or 124700 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1031223421100 its reverse (11243221301), we get a palindrome (1042466642401).

The spelling of 1031223421100 in words is "one trillion, thirty-one billion, two hundred twenty-three million, four hundred twenty-one thousand, one hundred".