1202102101 has 4 divisors (see below), whose sum is σ = 1214004204. Its totient is φ = 1190200000.

The previous prime is 1202102087. The next prime is 1202102119. The reversal of 1202102101 is 1012012021.

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 1184048100 + 18054001 = 34410^2 + 4249^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202102101 - 2¹⁹ = 1201577813 is a prime.

It is a super-2 number, since 2×1202102101² = 2890098922457228402, which contains 22 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 (1202102131) 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, 5950900 + ... + 5951101.

It is an arithmetic number, because the mean of its divisors is an integer number (303501051).

Almost surely, 2^1202102101 is an apocalyptic number.

It is an amenable number.

1202102101 is a deficient number, since it is larger than the sum of its proper divisors (11902103).

1202102101 is a wasteful number, since it uses less digits than its factorization.

1202102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11902102.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1202102101 is about 34671.3440898965. The cubic root of 1202102101 is about 1063.2787115565.

Adding to 1202102101 its reverse (1012012021), we get a palindrome (2214114122).

The spelling of 1202102101 in words is "one billion, two hundred two million, one hundred two thousand, one hundred one".