1010020021021 has 32 divisors (see below), whose sum is σ = 1176800209920. Its totient is φ = 863817799680.

The previous prime is 1010020020979. The next prime is 1010020021033. The reversal of 1010020021021 is 1201200200101.

It is not a de Polignac number, because 1010020021021 - 2⁹ = 1010020020509 is a prime.

It is a super-2 number, since 2×1010020021021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1010020020989 and 1010020021007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010020024021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61514605 + ... + 61531021.

It is an arithmetic number, because the mean of its divisors is an integer number (36775006560).

Almost surely, 2^{1010020021021} is an apocalyptic number.

1010020021021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1010020021021 is a deficient number, since it is larger than the sum of its proper divisors (166780188899).

1010020021021 is a wasteful number, since it uses less digits than its factorization.

1010020021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19186 (or 19164 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1010020021021 its reverse (1201200200101), we get a palindrome (2211220221122).

The spelling of 1010020021021 in words is "one trillion, ten billion, twenty million, twenty-one thousand, twenty-one".