20110021001490 has 64 divisors (see below), whose sum is σ = 55159272483840. Its totient is φ = 4596546417600.

The previous prime is 20110021001489. The next prime is 20110021001503. The reversal of 20110021001490 is 9410012001102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59608501 + ... + 59944919.

It is an arithmetic number, because the mean of its divisors is an integer number (861863632560).

Almost surely, 2^{20110021001490} is an apocalyptic number.

20110021001490 is an abundant number, since it is smaller than the sum of its proper divisors (35049251482350).

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

20110021001490 is a wasteful number, since it uses less digits than its factorization.

20110021001490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621087.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 20110021001490 its reverse (9410012001102), we get a palindrome (29520033002592).

The spelling of 20110021001490 in words is "twenty trillion, one hundred ten billion, twenty-one million, one thousand, four hundred ninety".