1211202210101 has 16 divisors (see below), whose sum is σ = 1306756872960. Its totient is φ = 1115989176960.

The previous prime is 1211202209981. The next prime is 1211202210107. The reversal of 1211202210101 is 1010122021121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211202210101 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 (1211202210107) 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, 38776376 + ... + 38807598.

It is an arithmetic number, because the mean of its divisors is an integer number (81672304560).

Almost surely, 2^{1211202210101} is an apocalyptic number.

It is an amenable number.

1211202210101 is a deficient number, since it is larger than the sum of its proper divisors (95554662859).

1211202210101 is a wasteful number, since it uses less digits than its factorization.

1211202210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36596.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211202210101 its reverse (1010122021121), we get a palindrome (2221324231222).

The spelling of 1211202210101 in words is "one trillion, two hundred eleven billion, two hundred two million, two hundred ten thousand, one hundred one".