1211212010 has 8 divisors (see below), whose sum is σ = 2180181636. Its totient is φ = 484484800.

The previous prime is 1211211979. The next prime is 1211212063. The reversal of 1211212010 is 102121121.

It can be written as a sum of positive squares in 2 ways, for example, as 1157292361 + 53919649 = 34019^2 + 7343^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1211211982 and 1211212000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60560591 + ... + 60560610.

Almost surely, 2^1211212010 is an apocalyptic number.

1211212010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211212010 is a deficient number, since it is larger than the sum of its proper divisors (968969626).

1211212010 is a wasteful number, since it uses less digits than its factorization.

1211212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121121208.

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

The square root of 1211212010 is about 34802.4713202956. The cubic root of 1211212010 is about 1065.9579088285.

Adding to 1211212010 its reverse (102121121), we get a palindrome (1313333131).

The spelling of 1211212010 in words is "one billion, two hundred eleven million, two hundred twelve thousand, ten".