1212211020012 has 48 divisors (see below), whose sum is σ = 2832932519424. Its totient is φ = 403436376000.

The previous prime is 1212211019953. The next prime is 1212211020017. The reversal of 1212211020012 is 2100201122121.

It is a junction number, because it is equal to n+sod(n) for n = 1212211019973 and 1212211020000.

It is not an unprimeable number, because it can be changed into a prime (1212211020017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31327437 + ... + 31366107.

It is an arithmetic number, because the mean of its divisors is an integer number (59019427488).

Almost surely, 2^{1212211020012} is an apocalyptic number.

1212211020012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212211020012 is an abundant number, since it is smaller than the sum of its proper divisors (1620721499412).

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

1212211020012 is a wasteful number, since it uses less digits than its factorization.

1212211020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42710 (or 42708 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212211020012 its reverse (2100201122121), we get a palindrome (3312412142133).

The spelling of 1212211020012 in words is "one trillion, two hundred twelve billion, two hundred eleven million, twenty thousand, twelve".