1202123111101 has 4 divisors (see below), whose sum is σ = 1311407030304. Its totient is φ = 1092839191900.

The previous prime is 1202123111099. The next prime is 1202123111143. The reversal of 1202123111101 is 1011113212021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1202123111101 - 2¹ = 1202123111099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202123111401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54641959585 + ... + 54641959606.

It is an arithmetic number, because the mean of its divisors is an integer number (327851757576).

Almost surely, 2^{1202123111101} is an apocalyptic number.

1202123111101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202123111101 is a deficient number, since it is larger than the sum of its proper divisors (109283919203).

1202123111101 is a wasteful number, since it uses less digits than its factorization.

1202123111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109283919202.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1202123111101 its reverse (1011113212021), we get a palindrome (2213236323122).

The spelling of 1202123111101 in words is "one trillion, two hundred two billion, one hundred twenty-three million, one hundred eleven thousand, one hundred one".