1200202100010 has 64 divisors (see below), whose sum is σ = 3388805942400. Its totient is φ = 301227192576.

The previous prime is 1200202099979. The next prime is 1200202100011. The reversal of 1200202100010 is 100012020021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1200202099965 and 1200202100001.

It is not an unprimeable number, because it can be changed into a prime (1200202100011) 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, 130736380 + ... + 130745559.

It is an arithmetic number, because the mean of its divisors is an integer number (52950092850).

Almost surely, 2^{1200202100010} is an apocalyptic number.

1200202100010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200202100010 is an abundant number, since it is smaller than the sum of its proper divisors (2188603842390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200202100010 is a wasteful number, since it uses less digits than its factorization.

1200202100010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261481972 (or 261481966 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1200202100010 its reverse (100012020021), we get a palindrome (1300214120031).

The spelling of 1200202100010 in words is "one trillion, two hundred billion, two hundred two million, one hundred thousand, ten".