20100021310 has 32 divisors (see below), whose sum is σ = 37761422400. Its totient is φ = 7688744448.

The previous prime is 20100021259. The next prime is 20100021317. The reversal of 20100021310 is 1312000102.

It is a super-2 number, since 2×20100021310² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100021317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1662166 + ... + 1674214.

It is an arithmetic number, because the mean of its divisors is an integer number (1180044450).

Almost surely, 2^20100021310 is an apocalyptic number.

20100021310 is a deficient number, since it is larger than the sum of its proper divisors (17661401090).

20100021310 is a wasteful number, since it uses less digits than its factorization.

20100021310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19332.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20100021310 its reverse (1312000102), we get a palindrome (21412021412).

The spelling of 20100021310 in words is "twenty billion, one hundred million, twenty-one thousand, three hundred ten".