211204101040 has 40 divisors (see below), whose sum is σ = 502469299728. Its totient is φ = 82516949760.

The previous prime is 211204101001. The next prime is 211204101047. The reversal of 211204101040 is 40101402112.

It is a happy number.

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

It is a super-2 number, since 2×211204101040² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (211204101047) 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, 30694831 + ... + 30701710.

Almost surely, 2^211204101040 is an apocalyptic number.

211204101040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211204101040 is an abundant number, since it is smaller than the sum of its proper divisors (291265198688).

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

211204101040 is a wasteful number, since it uses less digits than its factorization.

211204101040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61396597 (or 61396591 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211204101040 its reverse (40101402112), we get a palindrome (251305503152).

The spelling of 211204101040 in words is "two hundred eleven billion, two hundred four million, one hundred one thousand, forty".