1202200101978 has 16 divisors (see below), whose sum is σ = 2455557655680. Its totient is φ = 392207125376.

The previous prime is 1202200101953. The next prime is 1202200101979. The reversal of 1202200101978 is 8791010022021.

It is not an unprimeable number, because it can be changed into a prime (1202200101979) 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, 2131560183 + ... + 2131560746.

It is an arithmetic number, because the mean of its divisors is an integer number (153472353480).

Almost surely, 2^{1202200101978} is an apocalyptic number.

1202200101978 is an abundant number, since it is smaller than the sum of its proper divisors (1253357553702).

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

1202200101978 is a wasteful number, since it uses less digits than its factorization.

1202200101978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263120981.

The product of its (nonzero) digits is 4032, while the sum is 33.

Adding to 1202200101978 its reverse (8791010022021), we get a palindrome (9993210123999).

The spelling of 1202200101978 in words is "one trillion, two hundred two billion, two hundred million, one hundred one thousand, nine hundred seventy-eight".