1212002110020 has 96 divisors (see below), whose sum is σ = 3723608351232. Its totient is φ = 292709933568.

The previous prime is 1212002110013. The next prime is 1212002110057. The reversal of 1212002110020 is 200112002121.

It is a super-2 number, since 2×1212002110020² (a number of 25 digits) contains 22 as substring.

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 = 1212002109978 and 1212002110005.

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, 14617612 + ... + 14700291.

It is an arithmetic number, because the mean of its divisors is an integer number (38787586992).

Almost surely, 2^{1212002110020} is an apocalyptic number.

1212002110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212002110020 is an abundant number, since it is smaller than the sum of its proper divisors (2511606241212).

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

1212002110020 is a wasteful number, since it uses less digits than its factorization.

1212002110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29317981 (or 29317979 counting only the distinct ones).

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

Adding to 1212002110020 its reverse (200112002121), we get a palindrome (1412114112141).

The spelling of 1212002110020 in words is "one trillion, two hundred twelve billion, two million, one hundred ten thousand, twenty".