21150240310 has 8 divisors (see below), whose sum is σ = 38070432576. Its totient is φ = 8460096120.

The previous prime is 21150240301. The next prime is 21150240313. The reversal of 21150240310 is 1304205112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21150240310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21150240313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057512006 + ... + 1057512025.

It is an arithmetic number, because the mean of its divisors is an integer number (4758804072).

Almost surely, 2^21150240310 is an apocalyptic number.

21150240310 is a deficient number, since it is larger than the sum of its proper divisors (16920192266).

21150240310 is a wasteful number, since it uses less digits than its factorization.

21150240310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115024038.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 21150240310 its reverse (1304205112), we get a palindrome (22454445422).

The spelling of 21150240310 in words is "twenty-one billion, one hundred fifty million, two hundred forty thousand, three hundred ten".