20101211012 has 24 divisors (see below), whose sum is σ = 35270676000. Its totient is φ = 10023903360.

The previous prime is 20101210993. The next prime is 20101211017. The reversal of 20101211012 is 21011210102.

It is a junction number, because it is equal to n+sod(n) for n = 20101210984 and 20101211002.

It is not an unprimeable number, because it can be changed into a prime (20101211017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4810268 + ... + 4814444.

It is an arithmetic number, because the mean of its divisors is an integer number (1469611500).

Almost surely, 2^20101211012 is an apocalyptic number.

It is an amenable number.

20101211012 is a deficient number, since it is larger than the sum of its proper divisors (15169464988).

20101211012 is a wasteful number, since it uses less digits than its factorization.

20101211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091 (or 7089 counting only the distinct ones).

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

Adding to 20101211012 its reverse (21011210102), we get a palindrome (41112421114).

The spelling of 20101211012 in words is "twenty billion, one hundred one million, two hundred eleven thousand, twelve".