1210221202020 has 48 divisors (see below), whose sum is σ = 3389661602880. Its totient is φ = 322626393216.

The previous prime is 1210221201991. The next prime is 1210221202051. The reversal of 1210221202020 is 202021220121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2905090 + ... + 3295449.

It is an arithmetic number, because the mean of its divisors is an integer number (70617950060).

Almost surely, 2^{1210221202020} is an apocalyptic number.

1210221202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210221202020 is an abundant number, since it is smaller than the sum of its proper divisors (2179440400860).

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

1210221202020 is a wasteful number, since it uses less digits than its factorization.

1210221202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6203804 (or 6203802 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1210221202020 its reverse (202021220121), we get a palindrome (1412242422141).

The spelling of 1210221202020 in words is "one trillion, two hundred ten billion, two hundred twenty-one million, two hundred two thousand, twenty".