1023200021505 has 32 divisors (see below), whose sum is σ = 1639772918784. Its totient is φ = 544822762176.

The previous prime is 1023200021489. The next prime is 1023200021521. The reversal of 1023200021505 is 5051200023201.

1023200021505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1023200021489) and next prime (1023200021521).

It is not a de Polignac number, because 1023200021505 - 2⁴ = 1023200021489 is a prime.

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, 58038502 + ... + 58056128.

It is an arithmetic number, because the mean of its divisors is an integer number (51242903712).

Almost surely, 2^{1023200021505} is an apocalyptic number.

1023200021505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1023200021505 is a deficient number, since it is larger than the sum of its proper divisors (616572897279).

1023200021505 is a wasteful number, since it uses less digits than its factorization.

1023200021505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23685.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 1023200021505 its reverse (5051200023201), we get a palindrome (6074400044706).

The spelling of 1023200021505 in words is "one trillion, twenty-three billion, two hundred million, twenty-one thousand, five hundred five".