1202142101 has 2 divisors, whose sum is σ = 1202142102. Its totient is φ = 1202142100.

The previous prime is 1202142091. The next prime is 1202142107. The reversal of 1202142101 is 1012412021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 869955025 + 332187076 = 29495^2 + 18226^2 .

It is an emirp because it is prime and its reverse (1012412021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202142101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202142107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601071050 + 601071051.

It is an arithmetic number, because the mean of its divisors is an integer number (601071051).

Almost surely, 2^1202142101 is an apocalyptic number.

It is an amenable number.

1202142101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202142101 is an equidigital number, since it uses as much as digits as its factorization.

1202142101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1202142101 is about 34671.9209303436. The cubic root of 1202142101 is about 1063.2905049743.

Adding to 1202142101 its reverse (1012412021), we get a palindrome (2214554122).

The spelling of 1202142101 in words is "one billion, two hundred two million, one hundred forty-two thousand, one hundred one".