1202102121 has 8 divisors (see below), whose sum is σ = 1748512224. Its totient is φ = 728546720.

The previous prime is 1202102119. The next prime is 1202102129. The reversal of 1202102121 is 1212012021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1202102121 - 2¹ = 1202102119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202102097 and 1202102106.

It is not an unprimeable number, because it can be changed into a prime (1202102129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18213636 + ... + 18213701.

It is an arithmetic number, because the mean of its divisors is an integer number (218564028).

Almost surely, 2^1202102121 is an apocalyptic number.

1202102121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202102121 is a deficient number, since it is larger than the sum of its proper divisors (546410103).

1202102121 is a wasteful number, since it uses less digits than its factorization.

1202102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36427351.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1202102121 is about 34671.3443783191. The cubic root of 1202102121 is about 1063.2787174533.

Adding to 1202102121 its reverse (1212012021), we get a palindrome (2414114142).

The spelling of 1202102121 in words is "one billion, two hundred two million, one hundred two thousand, one hundred twenty-one".