20111202210210 has 32 divisors (see below), whose sum is σ = 48275188989120. Its totient is φ = 5362064624448.

The previous prime is 20111202210191. The next prime is 20111202210251. The reversal of 20111202210210 is 1201220211102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20111202210210.

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, 57487180 + ... + 57835959.

It is an arithmetic number, because the mean of its divisors is an integer number (1508599655910).

Almost surely, 2^{20111202210210} is an apocalyptic number.

20111202210210 is an abundant number, since it is smaller than the sum of its proper divisors (28163986778910).

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

20111202210210 is a wasteful number, since it uses less digits than its factorization.

20111202210210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115328962.

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

Adding to 20111202210210 its reverse (1201220211102), we get a palindrome (21312422421312).

The spelling of 20111202210210 in words is "twenty trillion, one hundred eleven billion, two hundred two million, two hundred ten thousand, two hundred ten".