12000021121010 has 64 divisors (see below), whose sum is σ = 23479362466560. Its totient is φ = 4389309699840.

The previous prime is 12000021120991. The next prime is 12000021121013. The reversal of 12000021121010 is 1012112000021.

It is a junction number, because it is equal to n+sod(n) for n = 12000021120982 and 12000021121000.

It is not an unprimeable number, because it can be changed into a prime (12000021121013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78751595 + ... + 78903825.

It is an arithmetic number, because the mean of its divisors is an integer number (366865038540).

Almost surely, 2^{12000021121010} is an apocalyptic number.

12000021121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12000021121010 is a deficient number, since it is larger than the sum of its proper divisors (11479341345550).

12000021121010 is a wasteful number, since it uses less digits than its factorization.

12000021121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157923.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12000021121010 its reverse (1012112000021), we get a palindrome (13012133121031).

The spelling of 12000021121010 in words is "twelve trillion, twenty-one million, one hundred twenty-one thousand, ten".