1212111001002 has 128 divisors (see below), whose sum is σ = 2719858176000. Its totient is φ = 356970598400.

The previous prime is 1212111000937. The next prime is 1212111001019. The reversal of 1212111001002 is 2001001112121.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 582464602 + ... + 582466682.

It is an arithmetic number, because the mean of its divisors is an integer number (21248892000).

Almost surely, 2^{1212111001002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212111001002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359929088000).

1212111001002 is an abundant number, since it is smaller than the sum of its proper divisors (1507747174998).

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

1212111001002 is a wasteful number, since it uses less digits than its factorization.

1212111001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1212111001002 its reverse (2001001112121), we get a palindrome (3213112113123).

The spelling of 1212111001002 in words is "one trillion, two hundred twelve billion, one hundred eleven million, one thousand, two".