121222120022 has 4 divisors (see below), whose sum is σ = 181833180036. Its totient is φ = 60611060010.

The previous prime is 121222120003. The next prime is 121222120027. The reversal of 121222120022 is 220021222121.

It is a happy number.

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

It is a super-4 number, since 4×121222120022⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222120027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30305530004 + ... + 30305530007.

It is an arithmetic number, because the mean of its divisors is an integer number (45458295009).

Almost surely, 2^121222120022 is an apocalyptic number.

121222120022 is a deficient number, since it is larger than the sum of its proper divisors (60611060014).

121222120022 is an equidigital number, since it uses as much as digits as its factorization.

121222120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60611060013.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121222120022 its reverse (220021222121), we get a palindrome (341243342143).

The spelling of 121222120022 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty thousand, twenty-two".