1210122221000 has 128 divisors (see below), whose sum is σ = 3530413935360. Its totient is φ = 377180928000.

The previous prime is 1210122220897. The next prime is 1210122221023. The reversal of 1210122221000 is 1222210121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7780937 + ... + 7934936.

It is an arithmetic number, because the mean of its divisors is an integer number (27581358870).

Almost surely, 2^{1210122221000} is an apocalyptic number.

1210122221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210122221000 is an abundant number, since it is smaller than the sum of its proper divisors (2320291714360).

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

1210122221000 is a wasteful number, since it uses less digits than its factorization.

1210122221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15715912 (or 15715898 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1210122221000 its reverse (1222210121), we get a palindrome (1211344431121).

The spelling of 1210122221000 in words is "one trillion, two hundred ten billion, one hundred twenty-two million, two hundred twenty-one thousand".