12021401530 has 32 divisors (see below), whose sum is σ = 21745584000. Its totient is φ = 4784808000.

The previous prime is 12021401527. The next prime is 12021401531. The reversal of 12021401530 is 3510412021.

It is a junction number, because it is equal to n+sod(n) for n = 12021401498 and 12021401507.

It is not an unprimeable number, because it can be changed into a prime (12021401531) 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, 4006971 + ... + 4009969.

It is an arithmetic number, because the mean of its divisors is an integer number (679549500).

Almost surely, 2^12021401530 is an apocalyptic number.

12021401530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021401530 is a deficient number, since it is larger than the sum of its proper divisors (9724182470).

12021401530 is a wasteful number, since it uses less digits than its factorization.

12021401530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4854.

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

Adding to 12021401530 its reverse (3510412021), we get a palindrome (15531813551).

The spelling of 12021401530 in words is "twelve billion, twenty-one million, four hundred one thousand, five hundred thirty".