20111111212002 has 16 divisors (see below), whose sum is σ = 40222309855680. Its totient is φ = 6703689165392.

The previous prime is 20111111211991. The next prime is 20111111212013. The reversal of 20111111212002 is 20021211111102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20111111211991) and next prime (20111111212013).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435477 + ... + 6357032.

It is an arithmetic number, because the mean of its divisors is an integer number (2513894365980).

Almost surely, 2^{20111111212002} is an apocalyptic number.

20111111212002 is an abundant number, since it is smaller than the sum of its proper divisors (20111198643678).

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

20111111212002 is a wasteful number, since it uses less digits than its factorization.

20111111212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7285977.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20111111212002 its reverse (20021211111102), we get a palindrome (40132322323104).

The spelling of 20111111212002 in words is "twenty trillion, one hundred eleven billion, one hundred eleven million, two hundred twelve thousand, two".