1211010010 has 24 divisors (see below), whose sum is σ = 2535707700. Its totient is φ = 415203264.

The previous prime is 1211009951. The next prime is 1211010029. The reversal of 1211010010 is 100101121.

It can be written as a sum of positive squares in 2 ways, for example, as 1143589489 + 67420521 = 33817^2 + 8211^2 .

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 1211009975 and 1211010002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1235235 + ... + 1236214.

Almost surely, 2^1211010010 is an apocalyptic number.

1211010010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211010010 is an abundant number, since it is smaller than the sum of its proper divisors (1324697690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211010010 is a wasteful number, since it uses less digits than its factorization.

1211010010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471470 (or 2471463 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1211010010 is about 34799.5691065277. The cubic root of 1211010010 is about 1065.8986471229.

Adding to 1211010010 its reverse (100101121), we get a palindrome (1311111131).

The spelling of 1211010010 in words is "one billion, two hundred eleven million, ten thousand, ten".