1021010221211 has 16 divisors (see below), whose sum is σ = 1028178643968. Its totient is φ = 1013866761600.

The previous prime is 1021010221199. The next prime is 1021010221223. The reversal of 1021010221211 is 1121220101201.

It is an interprime number because it is at equal distance from previous prime (1021010221199) and next prime (1021010221223).

It is a cyclic number.

It is not a de Polignac number, because 1021010221211 - 2¹⁰ = 1021010220187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021010221811) 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, 197599550 + ... + 197604716.

It is an arithmetic number, because the mean of its divisors is an integer number (64261165248).

Almost surely, 2^{1021010221211} is an apocalyptic number.

1021010221211 is a deficient number, since it is larger than the sum of its proper divisors (7168422757).

1021010221211 is a wasteful number, since it uses less digits than its factorization.

1021010221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7322.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1021010221211 its reverse (1121220101201), we get a palindrome (2142230322412).

The spelling of 1021010221211 in words is "one trillion, twenty-one billion, ten million, two hundred twenty-one thousand, two hundred eleven".