1202121210011 has 6 divisors (see below), whose sum is σ = 1268720723412. Its totient is φ = 1138851672300.

The previous prime is 1202121209999. The next prime is 1202121210067. The reversal of 1202121210011 is 1100121212021.

It is a de Polignac number, because none of the positive numbers 2^k-1202121210011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1202121210811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1664987465 + ... + 1664988186.

It is an arithmetic number, because the mean of its divisors is an integer number (211453453902).

Almost surely, 2^{1202121210011} is an apocalyptic number.

1202121210011 is a deficient number, since it is larger than the sum of its proper divisors (66599513401).

1202121210011 is an equidigital number, since it uses as much as digits as its factorization.

1202121210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329975689 (or 3329975670 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1202121210011 its reverse (1100121212021), we get a palindrome (2302242422032).

The spelling of 1202121210011 in words is "one trillion, two hundred two billion, one hundred twenty-one million, two hundred ten thousand, eleven".