2011121021002 has 4 divisors (see below), whose sum is σ = 3016681531506. Its totient is φ = 1005560510500.

The previous prime is 2011121020981. The next prime is 2011121021009. The reversal of 2011121021002 is 2001201211102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1618617518001 + 392503503001 = 1272249^2 + 626501^2 .

It is a super-2 number, since 2×2011121021002² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2011121021009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502780255249 + ... + 502780255252.

Almost surely, 2^{2011121021002} is an apocalyptic number.

2011121021002 is a deficient number, since it is larger than the sum of its proper divisors (1005560510504).

2011121021002 is a wasteful number, since it uses less digits than its factorization.

2011121021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005560510503.

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

Adding to 2011121021002 its reverse (2001201211102), we get a palindrome (4012322232104).

The spelling of 2011121021002 in words is "two trillion, eleven billion, one hundred twenty-one million, twenty-one thousand, two".