121211111202022 has 16 divisors (see below), whose sum is σ = 183706678351872. Its totient is φ = 59976351759240.

The previous prime is 121211111202011. The next prime is 121211111202047. The reversal of 121211111202022 is 220202111112121.

It is a happy number.

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, 199698148 + ... + 200304199.

It is an arithmetic number, because the mean of its divisors is an integer number (11481667396992).

Almost surely, 2^{121211111202022} is an apocalyptic number.

121211111202022 is a deficient number, since it is larger than the sum of its proper divisors (62495567149850).

121211111202022 is a wasteful number, since it uses less digits than its factorization.

121211111202022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400003923.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121211111202022 its reverse (220202111112121), we get a palindrome (341413222314143).

The spelling of 121211111202022 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred eleven million, two hundred two thousand, twenty-two".