1201222100010 has 128 divisors (see below), whose sum is σ = 3216102278400. Its totient is φ = 285355560960.

The previous prime is 1201222100009. The next prime is 1201222100011. The reversal of 1201222100010 is 100012221021.

It is an interprime number because it is at equal distance from previous prime (1201222100009) and next prime (1201222100011).

It is not an unprimeable number, because it can be changed into a prime (1201222100011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10690320 + ... + 10802100.

It is an arithmetic number, because the mean of its divisors is an integer number (25125799050).

Almost surely, 2^{1201222100010} is an apocalyptic number.

1201222100010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201222100010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1608051139200).

1201222100010 is an abundant number, since it is smaller than the sum of its proper divisors (2014880178390).

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

1201222100010 is a wasteful number, since it uses less digits than its factorization.

1201222100010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112936.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1201222100010 its reverse (100012221021), we get a palindrome (1301234321031).

The spelling of 1201222100010 in words is "one trillion, two hundred one billion, two hundred twenty-two million, one hundred thousand, ten".