121111120021002 has 16 divisors (see below), whose sum is σ = 243227311580352. Its totient is φ = 40202861417280.

The previous prime is 121111120020949. The next prime is 121111120021007. The reversal of 121111120021002 is 200120021111121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121111120021007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41877979198 + ... + 41877982089.

It is an arithmetic number, because the mean of its divisors is an integer number (15201706973772).

Almost surely, 2^{121111120021002} is an apocalyptic number.

121111120021002 is an abundant number, since it is smaller than the sum of its proper divisors (122116191559350).

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

121111120021002 is a wasteful number, since it uses less digits than its factorization.

121111120021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83755961533.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121111120021002 its reverse (200120021111121), we get a palindrome (321231141132123).

The spelling of 121111120021002 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred twenty million, twenty-one thousand, two".