1200000121030 has 16 divisors (see below), whose sum is σ = 2160015134544. Its totient is φ = 479996733600.

The previous prime is 1200000121007. The next prime is 1200000121031. The reversal of 1200000121030 is 301210000021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1200000120998 and 1200000121016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200000121031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1549180 + ... + 2190880.

It is an arithmetic number, because the mean of its divisors is an integer number (135000945909).

Almost surely, 2^{1200000121030} is an apocalyptic number.

1200000121030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200000121030 is a deficient number, since it is larger than the sum of its proper divisors (960015013514).

1200000121030 is a wasteful number, since it uses less digits than its factorization.

1200000121030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828711.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 1200000121030 its reverse (301210000021), we get a palindrome (1501210121051).

The spelling of 1200000121030 in words is "one trillion, two hundred billion, one hundred twenty-one thousand, thirty".