1201110102021 has 16 divisors (see below), whose sum is σ = 1784931422400. Its totient is φ = 713972567808.

The previous prime is 1201110102011. The next prime is 1201110102029. The reversal of 1201110102021 is 1202010111021.

It is not a de Polignac number, because 1201110102021 - 2⁶ = 1201110101957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201110101988 and 1201110102006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201110102029) 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, 619766886 + ... + 619768823.

It is an arithmetic number, because the mean of its divisors is an integer number (111558213900).

Almost surely, 2^{1201110102021} is an apocalyptic number.

It is an amenable number.

1201110102021 is a deficient number, since it is larger than the sum of its proper divisors (583821320379).

1201110102021 is a wasteful number, since it uses less digits than its factorization.

1201110102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239535748.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1201110102021 its reverse (1202010111021), we get a palindrome (2403120213042).

The spelling of 1201110102021 in words is "one trillion, two hundred one billion, one hundred ten million, one hundred two thousand, twenty-one".