1211010212 has 6 divisors (see below), whose sum is σ = 2119267878. Its totient is φ = 605505104.

The previous prime is 1211010211. The next prime is 1211010323. The reversal of 1211010212 is 2120101121.

It can be written as a sum of positive squares in only one way, i.e., 1157632576 + 53377636 = 34024^2 + 7306^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1211010193 and 1211010202.

It is not an unprimeable number, because it can be changed into a prime (1211010211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151376273 + ... + 151376280.

It is an arithmetic number, because the mean of its divisors is an integer number (353211313).

Almost surely, 2^1211010212 is an apocalyptic number.

It is an amenable number.

1211010212 is a deficient number, since it is larger than the sum of its proper divisors (908257666).

1211010212 is a wasteful number, since it uses less digits than its factorization.

1211010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302752557 (or 302752555 counting only the distinct ones).

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

The square root of 1211010212 is about 34799.5720088624. The cubic root of 1211010212 is about 1065.8987063879.

Adding to 1211010212 its reverse (2120101121), we get a palindrome (3331111333).

Subtracting 1211010212 from its reverse (2120101121), we obtain a palindrome (909090909).

It can be divided in two parts, 12110 and 10212, that added together give a palindrome (22322).

The spelling of 1211010212 in words is "one billion, two hundred eleven million, ten thousand, two hundred twelve".