211010100240 has 40 divisors (see below), whose sum is σ = 654131311488. Its totient is φ = 56269360000.

The previous prime is 211010100187. The next prime is 211010100241. The reversal of 211010100240 is 42001010112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (211010100241) 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, 439604136 + ... + 439604615.

Almost surely, 2^211010100240 is an apocalyptic number.

211010100240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211010100240 is an abundant number, since it is smaller than the sum of its proper divisors (443121211248).

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

211010100240 is a wasteful number, since it uses less digits than its factorization.

211010100240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879208767 (or 879208761 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211010100240 its reverse (42001010112), we get a palindrome (253011110352).

The spelling of 211010100240 in words is "two hundred eleven billion, ten million, one hundred thousand, two hundred forty".