1210012220100 has 36 divisors (see below), whose sum is σ = 3500968691024. Its totient is φ = 322669925280.

The previous prime is 1210012220063. The next prime is 1210012220101. The reversal of 1210012220100 is 10222100121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1210012220101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2016686734 + ... + 2016687333.

Almost surely, 2^{1210012220100} is an apocalyptic number.

1210012220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210012220100 is an abundant number, since it is smaller than the sum of its proper divisors (2290956470924).

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

1210012220100 is a wasteful number, since it uses less digits than its factorization.

1210012220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033374084 (or 4033374077 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1210012220100 its reverse (10222100121), we get a palindrome (1220234320221).

The spelling of 1210012220100 in words is "one trillion, two hundred ten billion, twelve million, two hundred twenty thousand, one hundred".