211151120540 has 24 divisors (see below), whose sum is σ = 443426055072. Its totient is φ = 84458790720.

The previous prime is 211151120501. The next prime is 211151120563. The reversal of 211151120540 is 45021151112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1749545 + ... + 1866335.

It is an arithmetic number, because the mean of its divisors is an integer number (18476085628).

Almost surely, 2^211151120540 is an apocalyptic number.

211151120540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211151120540 is an abundant number, since it is smaller than the sum of its proper divisors (232274934532).

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

211151120540 is a wasteful number, since it uses less digits than its factorization.

211151120540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207197 (or 207195 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 211151120540 its reverse (45021151112), we get a palindrome (256172271652).

The spelling of 211151120540 in words is "two hundred eleven billion, one hundred fifty-one million, one hundred twenty thousand, five hundred forty".