20121202202 has 4 divisors (see below), whose sum is σ = 30181803306. Its totient is φ = 10060601100.

The previous prime is 20121202151. The next prime is 20121202207. The reversal of 20121202202 is 20220212102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20220212102 = 2 ⋅10110106051.

It can be written as a sum of positive squares in only one way, i.e., 13349722681 + 6771479521 = 115541^2 + 82289^2 .

It is not an unprimeable number, because it can be changed into a prime (20121202207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5030300549 + ... + 5030300552.

Almost surely, 2^20121202202 is an apocalyptic number.

20121202202 is a deficient number, since it is larger than the sum of its proper divisors (10060601104).

20121202202 is a wasteful number, since it uses less digits than its factorization.

20121202202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10060601103.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20121202202 its reverse (20220212102), we get a palindrome (40341414304).

The spelling of 20121202202 in words is "twenty billion, one hundred twenty-one million, two hundred two thousand, two hundred two".