20111222011210 has 64 divisors (see below), whose sum is σ = 40412346315264. Its totient is φ = 7142599195200.

The previous prime is 20111222011121. The next prime is 20111222011217. The reversal of 20111222011210 is 1211022211102.

It is a super-2 number, since 2×20111222011210² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20111222011217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71239557 + ... + 71521303.

It is an arithmetic number, because the mean of its divisors is an integer number (631442911176).

Almost surely, 2^{20111222011210} is an apocalyptic number.

20111222011210 is an abundant number, since it is smaller than the sum of its proper divisors (20301124304054).

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

20111222011210 is a wasteful number, since it uses less digits than its factorization.

20111222011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296899.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20111222011210 its reverse (1211022211102), we get a palindrome (21322244222312).

The spelling of 20111222011210 in words is "twenty trillion, one hundred eleven billion, two hundred twenty-two million, eleven thousand, two hundred ten".