101211122221102 has 4 divisors (see below), whose sum is σ = 151816683331656. Its totient is φ = 50605561110550.

The previous prime is 101211122221093. The next prime is 101211122221103. The reversal of 101211122221102 is 201122221112101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×101211122221102² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101211122221102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211122221103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25302780555274 + ... + 25302780555277.

It is an arithmetic number, because the mean of its divisors is an integer number (37954170832914).

Almost surely, 2^{101211122221102} is an apocalyptic number.

101211122221102 is a deficient number, since it is larger than the sum of its proper divisors (50605561110554).

101211122221102 is an equidigital number, since it uses as much as digits as its factorization.

101211122221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50605561110553.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 101211122221102 its reverse (201122221112101), we get a palindrome (302333343333203).

The spelling of 101211122221102 in words is "one hundred one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred two".