121000211122222 has 4 divisors (see below), whose sum is σ = 181500316683336. Its totient is φ = 60500105561110.

The previous prime is 121000211122201. The next prime is 121000211122267. The reversal of 121000211122222 is 222221112000121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121000211122222.

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, 30250052780554 + ... + 30250052780557.

It is an arithmetic number, because the mean of its divisors is an integer number (45375079170834).

Almost surely, 2^{121000211122222} is an apocalyptic number.

121000211122222 is a deficient number, since it is larger than the sum of its proper divisors (60500105561114).

121000211122222 is an equidigital number, since it uses as much as digits as its factorization.

121000211122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60500105561113.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121000211122222 its reverse (222221112000121), we get a palindrome (343221323122343).

The spelling of 121000211122222 in words is "one hundred twenty-one trillion, two hundred eleven million, one hundred twenty-two thousand, two hundred twenty-two".