121001212222 has 16 divisors (see below), whose sum is σ = 209649159792. Its totient is φ = 51765224320.

The previous prime is 121001212159. The next prime is 121001212249. The reversal of 121001212222 is 222212100121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121001212196 and 121001212205.

It is a congruent number.

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, 161765953 + ... + 161766700.

It is an arithmetic number, because the mean of its divisors is an integer number (13103072487).

Almost surely, 2^121001212222 is an apocalyptic number.

121001212222 is a deficient number, since it is larger than the sum of its proper divisors (88647947570).

121001212222 is a wasteful number, since it uses less digits than its factorization.

121001212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323532683.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121001212222 its reverse (222212100121), we get a palindrome (343213312343).

It can be divided in two parts, 12100121 and 2222, that multiplied together give a palindrome (26886468862).

The spelling of 121001212222 in words is "one hundred twenty-one billion, one million, two hundred twelve thousand, two hundred twenty-two".