1023221212100 has 72 divisors (see below), whose sum is σ = 2236530186240. Its totient is φ = 406323688320.

The previous prime is 1023221212067. The next prime is 1023221212121. The reversal of 1023221212100 is 12121223201.

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, 7881917 + ... + 8010683.

Almost surely, 2^{1023221212100} is an apocalyptic number.

1023221212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023221212100 is an abundant number, since it is smaller than the sum of its proper divisors (1213308974140).

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

1023221212100 is a wasteful number, since it uses less digits than its factorization.

1023221212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129357 (or 129350 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1023221212100 its reverse (12121223201), we get a palindrome (1035342435301).

It can be divided in two parts, 1023221 and 212100, that added together give a palindrome (1235321).

The spelling of 1023221212100 in words is "one trillion, twenty-three billion, two hundred twenty-one million, two hundred twelve thousand, one hundred".