121121212020002 has 16 divisors (see below), whose sum is σ = 186140105730432. Its totient is φ = 59092097043840.

The previous prime is 121121212019993. The next prime is 121121212020013. The reversal of 121121212020002 is 200020212121121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4396719638 + ... + 4396747185.

It is an arithmetic number, because the mean of its divisors is an integer number (11633756608152).

Almost surely, 2^{121121212020002} is an apocalyptic number.

121121212020002 is a deficient number, since it is larger than the sum of its proper divisors (65018893710430).

121121212020002 is an equidigital number, since it uses as much as digits as its factorization.

121121212020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8793466993.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121121212020002 its reverse (200020212121121), we get a palindrome (321141424141123).

The spelling of 121121212020002 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred twelve million, twenty thousand, two".