1211087090 has 16 divisors (see below), whose sum is σ = 2189082240. Its totient is φ = 482406960.

The previous prime is 1211087083. The next prime is 1211087093. The reversal of 1211087090 is 907801121.

It is not an unprimeable number, because it can be changed into a prime (1211087093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250976 + ... + 255755.

It is an arithmetic number, because the mean of its divisors is an integer number (136817640).

Almost surely, 2^1211087090 is an apocalyptic number.

1211087090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211087090 is a deficient number, since it is larger than the sum of its proper divisors (977995150).

1211087090 is a wasteful number, since it uses less digits than its factorization.

1211087090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506977.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 1211087090 is about 34800.6765738829. The cubic root of 1211087090 is about 1065.9212612284.

The spelling of 1211087090 in words is "one billion, two hundred eleven million, eighty-seven thousand, ninety".