1012211001021 has 8 divisors (see below), whose sum is σ = 1472306910624. Its totient is φ = 613461212720.

The previous prime is 1012211001001. The next prime is 1012211001037. The reversal of 1012211001021 is 1201001122101.

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

It is a cyclic number.

It is not a de Polignac number, because 1012211001021 - 2⁹ = 1012211000509 is a prime.

It is a super-2 number, since 2×1012211001021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1012211000988 and 1012211001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012211001001) 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, 15336530286 + ... + 15336530351.

It is an arithmetic number, because the mean of its divisors is an integer number (184038363828).

Almost surely, 2^{1012211001021} is an apocalyptic number.

1012211001021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012211001021 is a deficient number, since it is larger than the sum of its proper divisors (460095909603).

1012211001021 is a wasteful number, since it uses less digits than its factorization.

1012211001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30673060651.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1012211001021 its reverse (1201001122101), we get a palindrome (2213212123122).

It can be divided in two parts, 101 and 2211001021, that added together give a palindrome (2211001122).

The spelling of 1012211001021 in words is "one trillion, twelve billion, two hundred eleven million, one thousand, twenty-one".