20212002221002 has 4 divisors (see below), whose sum is σ = 30318003331506. Its totient is φ = 10106001110500.

The previous prime is 20212002220967. The next prime is 20212002221017. The reversal of 20212002221002 is 20012220021202.

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., 18076689285561 + 2135312935441 = 4251669^2 + 1461271^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5053000555249 + ... + 5053000555252.

Almost surely, 2^{20212002221002} is an apocalyptic number.

20212002221002 is a deficient number, since it is larger than the sum of its proper divisors (10106001110504).

20212002221002 is a wasteful number, since it uses less digits than its factorization.

20212002221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106001110503.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20212002221002 its reverse (20012220021202), we get a palindrome (40224222242204).

The spelling of 20212002221002 in words is "twenty trillion, two hundred twelve billion, two million, two hundred twenty-one thousand, two".