1201102121251 has 2 divisors, whose sum is σ = 1201102121252. Its totient is φ = 1201102121250.

The previous prime is 1201102121239. The next prime is 1201102121267. The reversal of 1201102121251 is 1521212011021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201102121251 - 2⁷ = 1201102121123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201102121291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600551060625 + 600551060626.

It is an arithmetic number, because the mean of its divisors is an integer number (600551060626).

Almost surely, 2^{1201102121251} is an apocalyptic number.

1201102121251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201102121251 is an equidigital number, since it uses as much as digits as its factorization.

1201102121251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 1201102121251 its reverse (1521212011021), we get a palindrome (2722314132272).

The spelling of 1201102121251 in words is "one trillion, two hundred one billion, one hundred two million, one hundred twenty-one thousand, two hundred fifty-one".