1201111010121 has 16 divisors (see below), whose sum is σ = 1794288685248. Its totient is φ = 708271848000.

The previous prime is 1201111010083. The next prime is 1201111010137. The reversal of 1201111010121 is 1210101111021.

It is not a de Polignac number, because 1201111010121 - 2¹³ = 1201111001929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201111010097 and 1201111010106.

It is not an unprimeable number, because it can be changed into a prime (1201111010171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 491854230 + ... + 491856671.

It is an arithmetic number, because the mean of its divisors is an integer number (112143042828).

Almost surely, 2^{1201111010121} is an apocalyptic number.

1201111010121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201111010121 is a deficient number, since it is larger than the sum of its proper divisors (593177675127).

1201111010121 is a wasteful number, since it uses less digits than its factorization.

1201111010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983710952.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1201111010121 its reverse (1210101111021), we get a palindrome (2411212121142).

The spelling of 1201111010121 in words is "one trillion, two hundred one billion, one hundred eleven million, ten thousand, one hundred twenty-one".