1212020200020 has 48 divisors (see below), whose sum is σ = 3878464641408. Its totient is φ = 277033188480.

The previous prime is 1212020199989. The next prime is 1212020200049. The reversal of 1212020200020 is 200020202121.

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

It is a junction number, because it is equal to n+sod(n) for n = 1212020199969 and 1212020200005.

It is a congruent number.

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, 1442880771 + ... + 1442881610.

It is an arithmetic number, because the mean of its divisors is an integer number (80801346696).

Almost surely, 2^{1212020200020} is an apocalyptic number.

1212020200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212020200020 is an abundant number, since it is smaller than the sum of its proper divisors (2666444441388).

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

1212020200020 is a wasteful number, since it uses less digits than its factorization.

1212020200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2885762400 (or 2885762398 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1212020200020 its reverse (200020202121), we get a palindrome (1412040402141).

It can be divided in two parts, 1212020 and 200020, that added together give a triangular number (1412040 = T₁₆₈₀).

The spelling of 1212020200020 in words is "one trillion, two hundred twelve billion, twenty million, two hundred thousand, twenty".