1020212001021 has 16 divisors (see below), whose sum is σ = 1376290315008. Its totient is φ = 672162408000.

The previous prime is 1020212000981. The next prime is 1020212001031. The reversal of 1020212001021 is 1201002120201.

It is not a de Polignac number, because 1020212001021 - 2⁷ = 1020212000893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020212000988 and 1020212001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020212001031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2947941 + ... + 3275786.

It is an arithmetic number, because the mean of its divisors is an integer number (86018144688).

Almost surely, 2^{1020212001021} is an apocalyptic number.

It is an amenable number.

1020212001021 is a deficient number, since it is larger than the sum of its proper divisors (356078313987).

1020212001021 is a wasteful number, since it uses less digits than its factorization.

1020212001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6224372.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1020212001021 its reverse (1201002120201), we get a palindrome (2221214121222).

The spelling of 1020212001021 in words is "one trillion, twenty billion, two hundred twelve million, one thousand, twenty-one".