20101211210 has 16 divisors (see below), whose sum is σ = 36185356800. Its totient is φ = 8039778576.

The previous prime is 20101211189. The next prime is 20101211227. The reversal of 20101211210 is 1211210102.

It is a super-3 number, since 3×20101211210³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20101211191 and 20101211200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40271 + ... + 204509.

It is an arithmetic number, because the mean of its divisors is an integer number (2261584800).

Almost surely, 2^20101211210 is an apocalyptic number.

20101211210 is a deficient number, since it is larger than the sum of its proper divisors (16084145590).

20101211210 is a wasteful number, since it uses less digits than its factorization.

20101211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176485.

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

Adding to 20101211210 its reverse (1211210102), we get a palindrome (21312421312).

The spelling of 20101211210 in words is "twenty billion, one hundred one million, two hundred eleven thousand, two hundred ten".