20011111220210 has 128 divisors (see below), whose sum is σ = 40472947565568. Its totient is φ = 7062271200000.

The previous prime is 20011111220189. The next prime is 20011111220249. The reversal of 20011111220210 is 1202211111002.

It is a super-2 number, since 2×20011111220210² (a number of 27 digits) contains 22 as substring.

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, 180154949 + ... + 180265991.

It is an arithmetic number, because the mean of its divisors is an integer number (316194902856).

Almost surely, 2^{20011111220210} is an apocalyptic number.

20011111220210 is an abundant number, since it is smaller than the sum of its proper divisors (20461836345358).

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

20011111220210 is a wasteful number, since it uses less digits than its factorization.

20011111220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111480.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20011111220210 its reverse (1202211111002), we get a palindrome (21213322331212).

The spelling of 20011111220210 in words is "twenty trillion, eleven billion, one hundred eleven million, two hundred twenty thousand, two hundred ten".