121111210121222 has 8 divisors (see below), whose sum is σ = 181666918250496. Its totient is φ = 60555570704392.

The previous prime is 121111210121173. The next prime is 121111210121281. The reversal of 121111210121222 is 222121012111121.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 121111210121194 and 121111210121203.

It is a congruent number.

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, 12518918 + ... + 19973625.

It is an arithmetic number, because the mean of its divisors is an integer number (22708364781312).

Almost surely, 2^{121111210121222} is an apocalyptic number.

121111210121222 is a deficient number, since it is larger than the sum of its proper divisors (60555708129274).

121111210121222 is a wasteful number, since it uses less digits than its factorization.

121111210121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34356222.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 121111210121222 its reverse (222121012111121), we get a palindrome (343232222232343).

The spelling of 121111210121222 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred ten million, one hundred twenty-one thousand, two hundred twenty-two".