121020100022 has 4 divisors (see below), whose sum is σ = 181530150036. Its totient is φ = 60510050010.

The previous prime is 121020099979. The next prime is 121020100051. The reversal of 121020100022 is 220001020121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 121020099976 and 121020100012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30255025004 + ... + 30255025007.

It is an arithmetic number, because the mean of its divisors is an integer number (45382537509).

Almost surely, 2^121020100022 is an apocalyptic number.

121020100022 is a deficient number, since it is larger than the sum of its proper divisors (60510050014).

121020100022 is an equidigital number, since it uses as much as digits as its factorization.

121020100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60510050013.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121020100022 its reverse (220001020121), we get a palindrome (341021120143).

The spelling of 121020100022 in words is "one hundred twenty-one billion, twenty million, one hundred thousand, twenty-two".