1211900514 has 32 divisors (see below), whose sum is σ = 2645450496. Its totient is φ = 367061520.

The previous prime is 1211900507. The next prime is 1211900531. The reversal of 1211900514 is 4150091121.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199429 + ... + 205415.

It is an arithmetic number, because the mean of its divisors is an integer number (82670328).

Almost surely, 2^1211900514 is an apocalyptic number.

1211900514 is an abundant number, since it is smaller than the sum of its proper divisors (1433549982).

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

1211900514 is a wasteful number, since it uses less digits than its factorization.

1211900514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9070.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 1211900514 is about 34812.3615113942. The cubic root of 1211900514 is about 1066.1598490501.

Adding to 1211900514 its reverse (4150091121), we get a palindrome (5361991635).

The spelling of 1211900514 in words is "one billion, two hundred eleven million, nine hundred thousand, five hundred fourteen".