121001120222002 has 4 divisors (see below), whose sum is σ = 181501680333006. Its totient is φ = 60500560111000.

The previous prime is 121001120221979. The next prime is 121001120222009. The reversal of 121001120222002 is 200222021100121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 61986475176201 + 59014645045801 = 7873149^2 + 7682099^2 .

It is not an unprimeable number, because it can be changed into a prime (121001120222009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30250280055499 + ... + 30250280055502.

Almost surely, 2^{121001120222002} is an apocalyptic number.

121001120222002 is a deficient number, since it is larger than the sum of its proper divisors (60500560111004).

121001120222002 is an equidigital number, since it uses as much as digits as its factorization.

121001120222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60500560111003.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121001120222002 its reverse (200222021100121), we get a palindrome (321223141322123).

The spelling of 121001120222002 in words is "one hundred twenty-one trillion, one billion, one hundred twenty million, two hundred twenty-two thousand, two".