1211020001101 has 16 divisors (see below), whose sum is σ = 1283947891200. Its totient is φ = 1138280825088.

The previous prime is 1211020001089. The next prime is 1211020001119. The reversal of 1211020001101 is 1011000201121.

It is a cyclic number.

It is not a de Polignac number, because 1211020001101 - 2⁵ = 1211020001069 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 (1211020001161) 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, 61279660 + ... + 61299418.

It is an arithmetic number, because the mean of its divisors is an integer number (80246743200).

Almost surely, 2^{1211020001101} is an apocalyptic number.

It is an amenable number.

1211020001101 is a deficient number, since it is larger than the sum of its proper divisors (72927890099).

1211020001101 is a wasteful number, since it uses less digits than its factorization.

1211020001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24348.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1211020001101 its reverse (1011000201121), we get a palindrome (2222020202222).

The spelling of 1211020001101 in words is "one trillion, two hundred eleven billion, twenty million, one thousand, one hundred one".