2002121112157 has 2 divisors, whose sum is σ = 2002121112158. Its totient is φ = 2002121112156.

The previous prime is 2002121112107. The next prime is 2002121112179. The reversal of 2002121112157 is 7512111212002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1883100252121 + 119020860036 = 1372261^2 + 344994^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002121112157 - 2²⁷ = 2001986894429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002121112107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001060556078 + 1001060556079.

It is an arithmetic number, because the mean of its divisors is an integer number (1001060556079).

Almost surely, 2^{2002121112157} is an apocalyptic number.

It is an amenable number.

2002121112157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002121112157 is an equidigital number, since it uses as much as digits as its factorization.

2002121112157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 25.

Adding to 2002121112157 its reverse (7512111212002), we get a palindrome (9514232324159).

The spelling of 2002121112157 in words is "two trillion, two billion, one hundred twenty-one million, one hundred twelve thousand, one hundred fifty-seven".