121121220202 has 32 divisors (see below), whose sum is σ = 186381417600. Its totient is φ = 59014612800.

The previous prime is 121121220193. The next prime is 121121220221. The reversal of 121121220202 is 202022121121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18930868 + ... + 18937264.

It is an arithmetic number, because the mean of its divisors is an integer number (5824419300).

Almost surely, 2^121121220202 is an apocalyptic number.

121121220202 is a deficient number, since it is larger than the sum of its proper divisors (65260197398).

121121220202 is a wasteful number, since it uses less digits than its factorization.

121121220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7966.

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

Adding to 121121220202 its reverse (202022121121), we get a palindrome (323143341323).

The spelling of 121121220202 in words is "one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty thousand, two hundred two".