21030201145 has 8 divisors (see below), whose sum is σ = 25434952704. Its totient is φ = 16691686704.

The previous prime is 21030201139. The next prime is 21030201163. The reversal of 21030201145 is 54110203012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21030201145 is a prime.

It is a super-2 number, since 2×21030201145² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16558579 + ... + 16559848.

It is an arithmetic number, because the mean of its divisors is an integer number (3179369088).

Almost surely, 2^21030201145 is an apocalyptic number.

It is an amenable number.

21030201145 is a deficient number, since it is larger than the sum of its proper divisors (4404751559).

21030201145 is a wasteful number, since it uses less digits than its factorization.

21030201145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33118559.

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

Adding to 21030201145 its reverse (54110203012), we get a palindrome (75140404157).

The spelling of 21030201145 in words is "twenty-one billion, thirty million, two hundred one thousand, one hundred forty-five".