20111120210 has 32 divisors (see below), whose sum is σ = 37381798080. Its totient is φ = 7785263808.

The previous prime is 20111120177. The next prime is 20111120231. The reversal of 20111120210 is 1202111102.

It is a super-2 number, since 2×20111120210² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20111120191 and 20111120200.

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, 167672 + ... + 261411.

It is an arithmetic number, because the mean of its divisors is an integer number (1168181190).

Almost surely, 2^20111120210 is an apocalyptic number.

20111120210 is a deficient number, since it is larger than the sum of its proper divisors (17270677870).

20111120210 is a wasteful number, since it uses less digits than its factorization.

20111120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429242.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20111120210 its reverse (1202111102), we get a palindrome (21313231312).

The spelling of 20111120210 in words is "twenty billion, one hundred eleven million, one hundred twenty thousand, two hundred ten".