121221122002 has 8 divisors (see below), whose sum is σ = 181838188800. Its totient is φ = 60608392404.

The previous prime is 121221121997. The next prime is 121221122021. The reversal of 121221122002 is 200221122121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013502 + ... + 1126777.

It is an arithmetic number, because the mean of its divisors is an integer number (22729773600).

Almost surely, 2^121221122002 is an apocalyptic number.

121221122002 is a deficient number, since it is larger than the sum of its proper divisors (60617066798).

121221122002 is a wasteful number, since it uses less digits than its factorization.

121221122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168600.

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

Adding to 121221122002 its reverse (200221122121), we get a palindrome (321442244123).

The spelling of 121221122002 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-two thousand, two".