1210122101 has 4 divisors (see below), whose sum is σ = 1281305772. Its totient is φ = 1138938432.

The previous prime is 1210122091. The next prime is 1210122119. The reversal of 1210122101 is 1012210121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 565012900 + 645109201 = 23770^2 + 25399^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210122101 - 2¹⁴ = 1210105717 is a prime.

It is a super-3 number, since 3×1210122101³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210122131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35591810 + ... + 35591843.

It is an arithmetic number, because the mean of its divisors is an integer number (320326443).

Almost surely, 2^1210122101 is an apocalyptic number.

It is an amenable number.

1210122101 is a deficient number, since it is larger than the sum of its proper divisors (71183671).

1210122101 is an equidigital number, since it uses as much as digits as its factorization.

1210122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71183670.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1210122101 is about 34786.8092960536. The cubic root of 1210122101 is about 1065.6380788389.

Adding to 1210122101 its reverse (1012210121), we get a palindrome (2222332222).

The spelling of 1210122101 in words is "one billion, two hundred ten million, one hundred twenty-two thousand, one hundred one".