121121210122002 has 12 divisors (see below), whose sum is σ = 262429288597710. Its totient is φ = 40373736707328.

The previous prime is 121121210121887. The next prime is 121121210122013. The reversal of 121121210122002 is 200221012121121.

121121210122002 is a `hidden beast` number, since 1 + 211 + 21 + 210 + 1 + 220 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 121025103301881 + 96106820121 = 11001141^2 + 310011^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6728956117889 = 121121210122002 / (1 + 2 + 1 + 1 + 2 + 1 + 2 + 1 + 0 + 1 + 2 + 2 + 0 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3364478058927 + ... + 3364478058962.

Almost surely, 2^{121121210122002} is an apocalyptic number.

121121210122002 is an abundant number, since it is smaller than the sum of its proper divisors (141308078475708).

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

121121210122002 is a wasteful number, since it uses less digits than its factorization.

121121210122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6728956117897 (or 6728956117894 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121121210122002 its reverse (200221012121121), we get a palindrome (321342222243123).

The spelling of 121121210122002 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred ten million, one hundred twenty-two thousand, two".