2101211012 has 6 divisors (see below), whose sum is σ = 3677119278. Its totient is φ = 1050605504.

The previous prime is 2101210997. The next prime is 2101211017. The reversal of 2101211012 is 2101121012.

It can be written as a sum of positive squares in only one way, i.e., 1218289216 + 882921796 = 34904^2 + 29714^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2101210984 and 2101211002.

It is not an unprimeable number, because it can be changed into a prime (2101211017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262651373 + ... + 262651380.

It is an arithmetic number, because the mean of its divisors is an integer number (612853213).

Almost surely, 2^2101211012 is an apocalyptic number.

It is an amenable number.

2101211012 is a deficient number, since it is larger than the sum of its proper divisors (1575908266).

2101211012 is a wasteful number, since it uses less digits than its factorization.

2101211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525302757 (or 525302755 counting only the distinct ones).

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

The square root of 2101211012 is about 45838.9682693666. The cubic root of 2101211012 is about 1280.8252758971.

Adding to 2101211012 its reverse (2101121012), we get a palindrome (4202332024).

Subtracting from 2101211012 its reverse (2101121012), we obtain a square (90000 = 300²).

The spelling of 2101211012 in words is "two billion, one hundred one million, two hundred eleven thousand, twelve".