201211121002 has 4 divisors (see below), whose sum is σ = 301816681506. Its totient is φ = 100605560500.

The previous prime is 201211120991. The next prime is 201211121063. The reversal of 201211121002 is 200121112102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200121112102 = 2 ⋅100060556051.

It can be written as a sum of positive squares in only one way, i.e., 105897525561 + 95313595441 = 325419^2 + 308729^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50302780249 + ... + 50302780252.

Almost surely, 2^201211121002 is an apocalyptic number.

201211121002 is a deficient number, since it is larger than the sum of its proper divisors (100605560504).

201211121002 is a wasteful number, since it uses less digits than its factorization.

201211121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100605560503.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201211121002 its reverse (200121112102), we get a palindrome (401332233104).

It can be divided in two parts, 20121112100 and 2, that added together give a palindrome (20121112102).

The spelling of 201211121002 in words is "two hundred one billion, two hundred eleven million, one hundred twenty-one thousand, two".