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122111121212 = 2230527780303
BaseRepresentation
bin111000110111001100…
…0111101011100111100
3102200012010121200100222
41301232120331130330
54000040421334322
6132032545040512
711552012255513
oct1615630753474
9380163550328
10122111121212
11478725a97a3
121b7ba926138
13b69069a212
145ca588967a
15329a4b7e42
hex1c6e63d73c

122111121212 has 6 divisors (see below), whose sum is σ = 213694462128. Its totient is φ = 61055560604.

The previous prime is 122111121211. The next prime is 122111121217. The reversal of 122111121212 is 212121111221.

It is a super-2 number, since 2×1221111212122 (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111121211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15263890148 + ... + 15263890155.

It is an arithmetic number, because the mean of its divisors is an integer number (35615743688).

Almost surely, 2122111121212 is an apocalyptic number.

It is an amenable number.

122111121212 is a deficient number, since it is larger than the sum of its proper divisors (91583340916).

122111121212 is a wasteful number, since it uses less digits than its factorization.

122111121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30527780307 (or 30527780305 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

Adding to 122111121212 its reverse (212121111221), we get a palindrome (334232232433).

Subtracting 122111121212 from its reverse (212121111221), we obtain a palindrome (90009990009).

The spelling of 122111121212 in words is "one hundred twenty-two billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twelve".