1211102100201 has 16 divisors (see below), whose sum is σ = 1849770805248. Its totient is φ = 690452634000.

The previous prime is 1211102100199. The next prime is 1211102100269. The reversal of 1211102100201 is 1020012011121.

It is not a de Polignac number, because 1211102100201 - 2¹ = 1211102100199 is a prime.

It is a super-2 number, since 2×1211102100201² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211102101201) 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, 66895275 + ... + 66913376.

It is an arithmetic number, because the mean of its divisors is an integer number (115610675328).

Almost surely, 2^{1211102100201} is an apocalyptic number.

It is an amenable number.

1211102100201 is a deficient number, since it is larger than the sum of its proper divisors (638668705047).

1211102100201 is a wasteful number, since it uses less digits than its factorization.

1211102100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133809092.

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

Adding to 1211102100201 its reverse (1020012011121), we get a palindrome (2231114111322).

The spelling of 1211102100201 in words is "one trillion, two hundred eleven billion, one hundred two million, one hundred thousand, two hundred one".