20111010210 has 64 divisors (see below), whose sum is σ = 53641906560. Its totient is φ = 5361681600.

The previous prime is 20111010203. The next prime is 20111010289. The reversal of 20111010210 is 1201011102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20111010192 and 20111010201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2026260 + ... + 2036160.

It is an arithmetic number, because the mean of its divisors is an integer number (838154790).

Almost surely, 2^20111010210 is an apocalyptic number.

20111010210 is an abundant number, since it is smaller than the sum of its proper divisors (33530896350).

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

20111010210 is a wasteful number, since it uses less digits than its factorization.

20111010210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17440 (or 17434 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20111010210 its reverse (1201011102), we get a palindrome (21312021312).

The spelling of 20111010210 in words is "twenty billion, one hundred eleven million, ten thousand, two hundred ten".